What makes each piece of evidence affective?

“ My brother Bob knows all about this risk.”

A. It compares an unfamiliar concept to something similar.
B. It uses a survey to show the extent of the issue.
C. It tells a personal story to support the claim

Asentence teacher gives the following speech. prepare a brief speech to accompany your science project. the speech will be presented to a faculty panel selected as judges. include a summary of your hypothesis, methods, and results. provide an explanation of any pictures or charts one of your poster. also share any complications you encountered during the science fair process. who is the intended audience for the teachers speech? a. young students. b. peers at the science fair. c. teacher evaluators. d. science professionals

Could someone me with this question?

In “the bet” by anton p. chekhov, what motivates the lawyer to participate in the bet?