Using Commas to Set Off Adjective Clauses

1. Kish who runs the organization World Access for the Blind regularly rides his bike down busy streets and goes on long hikes.

   Question

   A.

   Kish who runs the organization, World Access for the Blind, regularly rides his bike down busy streets and goes on long hikes.

   B.

   Kish, who runs the organization World Access for the Blind, regularly rides his bike down busy streets and goes on long hikes.

   C.

   Kish who runs the organization World Access for the Blind, regularly rides his bike down busy streets and goes on long hikes.

   Using Commas to Set Off Adjective Clauses - Question 1
2. His system for “seeing” his surroundings which is known as echolocation uses sound waves to create mental pictures of buildings, cars, trees, and other objects.

   Question

   A.

   His system for “seeing” his surroundings, which is known as echolocation, uses sound waves to create mental pictures of buildings, cars, trees, and other objects.

   B.

   His system for “seeing” his surroundings which is known as echolocation, uses sound waves to create mental pictures of buildings, cars, trees, and other objects.

   C.

   His system, for “seeing” his surroundings which is known as echolocation, uses sound waves to create mental pictures of buildings, cars, trees, and other objects.

   Using Commas to Set Off Adjective Clauses - Question 2
3. As Kish bikes around his neighborhood or hikes to sites that are deep in the wilderness, he clicks his tongue and listens to the echoes.

   Question

   A.

   As Kish bikes around his neighborhood, or hikes to sites that are deep in the wilderness, he clicks his tongue and listens to the echoes.

   B.

   As Kish bikes around his neighborhood or hikes to sites, that are deep in the wilderness, he clicks his tongue and listens to the echoes.

   C.

   Sentence is correct.

   Using Commas to Set Off Adjective Clauses - Question 3
4. The echoes which differ depending on the distance and physical features of nearby objects allow him to map his surroundings in his mind.

   Question

   A.

   The echoes which differ, depending on the distance and physical features of nearby objects, allow him to map his surroundings in his mind.

   B.

   The echoes, which differ depending on the distance and physical features of nearby objects, allow him to map his surroundings in his mind.

   C.

   Sentence is correct.

   Using Commas to Set Off Adjective Clauses - Question 4
5. This mental map which he constantly revises as he moves ahead helps him avoid running into cars, trees, and other obstacles.

   Question

   A.

   This mental map which he constantly revises as he moves ahead helps him avoid running, into cars, trees, and other obstacles.

   B.

   This mental map, which he constantly revises as he moves ahead helps him avoid running into cars, trees, and other obstacles.

   C.

   This mental map, which he constantly revises as he moves ahead, helps him avoid running into cars, trees, and other obstacles.

   Using Commas to Set Off Adjective Clauses - Question 5
6. Researchers who recently investigated Kish’s echolocation made some interesting discoveries.

   Question

   A.

   Researchers, who recently investigated Kish’s echolocation, made some interesting discoveries.

   B.

   Researchers who recently investigated Kish’s echolocation, made some interesting discoveries.

   C.

   Sentence is correct

   Using Commas to Set Off Adjective Clauses - Question 6
7. They found that Kish’s visual cortex which is the part of the brain that processes visual information was activated during his sessions of mapping with sound.

   Question

   A.

   They found that Kish’s visual cortex, which is the part of the brain that processes visual information, was activated during his sessions of mapping with sound.

   B.

   They found that Kish’s visual cortex which is the part of the brain, that processes visual information, was activated during his sessions of mapping with sound.

   C.

   They found that Kish’s visual cortex, which is the part of the brain that processes visual information was activated during his sessions of mapping with sound.

   Using Commas to Set Off Adjective Clauses - Question 7
8. This finding which received a lot of attention in the scientific community suggests that Kish’s way of seeing the world is indeed visual.

   Question

   A.

   This finding which received a lot of attention in the scientific community, suggests that Kish’s way of seeing the world is indeed visual.

   B.

   This finding, which received a lot of attention in the scientific community, suggests that Kish’s way of seeing the world is indeed visual.

   C.

   Sentence is correct.

   Using Commas to Set Off Adjective Clauses - Question 8
9. Other blind people who have been trained in echolocation have learned to be as active and independent as Kish is.

   Question

   A.

   Other blind people, who have been trained in echolocation have learned to be as active and independent as Kish is.

   B.

   Other blind people who have been trained in echolocation, have learned to be as active and independent as Kish is.

   C.

   Sentence is correct.

   Using Commas to Set Off Adjective Clauses - Question 9
10. The successes that they and Kish have achieved offer additional proof that blindness does not equal helplessness.

    Question

    A.

    The successes, that they and Kish have achieved, offer additional proof that blindness does not equal helplessness.

    B.

    The successes that they and Kish have achieved, offer additional proof that blindness does not equal helplessness.

    C.

    Sentence is correct.

    Using Commas to Set Off Adjective Clauses - Question 10