Whereas many young people think they need only a few hours of sleep a night, they really require more like eight or nine hours of sleep, according to sleep experts. Answer choices for the above question

A. subordinating conjunction

B. independent clause

C. dependent clause

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.

the answer would be logos.