A key part of the author's message is that people should * display a great attitude when interviewing for a job show respect for teachers and coaches think about their own lives and let others take care of themselves expect nothing in return for giving to others

Expect nothing in return for giving to others

Explanation:

The first one should be ¨display a great attitude when being interviewed for a job.¨

Show respect for teachers and coaches is a trifle too obvious to be a message.

Think about their own lives and let others take care of themselves can hardly  be expected to be a moral message for other people.

As my favourite Dutch poet, Hendrik Marsman, once said: The key to personal happiness lies in making other people happy (by giving without expecting something in return).

the answer should be b.

explanation:

it should be b because she researched before writing so it would be in past tense. "the author researches her subject before she had written the first draft.