EXERCISE 38–2 End punctuation
Example:

A month after leaving her job as a chemist to teach in a high school, Rosa wondered if she had made the right decision?

A month after leaving her job as a chemist to teach in a high school, Rosa wondered if she had made the right decision.

The second sentence is an indirect question and correctly ends with a period, not a question mark.

For more help, see section 38b.