Defending or challenging claims part B

I dont understand your question

the characters in string all have major secrets that they strive to avoid revealing throughout the play.

from the political point of view it could be said that the candidate   is an effective speaker because she takes a strong position on the issue. it is an open discussion but probably she is making a presentation and can choose which subjects she wants to address. she is very likely to attain her aim which is to convince voters to accept her proposal.