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.
Answer:He ran out of energy and gave up
Explanation:
Its past, "have experienced" meaning they've already been through it
You'll want to leave it out. if it isn't conducive to the content of your paper, it's more like a distraction from what you're trying to say. parentheses might be a "safe" way to signify a side topic, but it weakens the paper as a general statement because the reader has to pause and take a moment to absorb a new topic before going back to what you were saying
Answer:
a: this homesick sailor is struggling to save his crewmen and himself
