Answer:
b.It can demonstrate his motivation
The strenghts, weaknesses and motivations of the characters.
To compete is a nominal infinite, I believe.
3. The man spoke in a fiery and vulgar manner.
Your work experience and educational background. If a teacher was interviewing for a job, they would want to know how qualifies she is, and if she even went to college. If they didnt know this, then they would be skeptical.