<span>the answer is A) gives the idea that the writer is sympathetic and respectable
Sympathetic is a feeling, showing, or expressing sympathy, attracting the liking of others, while Respectably is someone or something that is respectable is approved of by society and considered.</span>
Yes I can write restaurant with a capital r : Restaurant
The best example of a primary source among these options that you've mentioned is an interview with her dad who is a Vietnam veteran. She can get all the details she needs from a person who was actually there.