The text is broken into different sections. Explain how this structure supports the text as a whole. Use textual evidence to support your explanation.

It supports the text as a whole because it helps you to comprehend what is happening or going on a little better.

Explanation:

C. Books

B. Encyclopedias

E. Interviews

Explanation:

These are the best sources of information to use in each case. For detailed, well-researched information, a book is usually your best option. However, due to the time it takes to publish them, this is only an option for information that is over two years old. On the other hand, for basic, brief information on a topic, an encyclopedia is likely to work well. Finally, if you had to speak about Vietnam veterans, it would be best if you interviewed veterans themselves.