The following sentences may be missing commas. Select the answer choice that correctly adds commas as necessary to set off nonrestrictive clauses. (If no additional commas are needed, select “correct sentence.”)
For help with this exercise, see section 26d of Focus on Reading and Writing.
Some childhood accidents which include falls and drowning can be prevented.
| A. |
| B. |
| C. |
| D. |
Parents who wish to reduce the risk of injury to their children can follow a few simple suggestions.
| A. |
| B. |
| C. |
| D. |
Children’s bicycle helmets which are not required by law in most places can limit the damage caused in an accident.
| A. |
| B. |
| C. |
| D. |
Young cyclists should wear helmets that are fastened properly.
| A. |
| B. |
| C. |
| D. |
Children under ten who are not old enough to judge a car’s speed and distance should not cross a busy street alone.
| A. |
| B. |
| C. |
| D. |