The atomic bomb was produced through: oa. the yalta conference. b. operation overlord. c. the manhattan project. d. operation torch.

i think it may be b, i'm not exactly too sure on this. but b seems to make more sense.

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.

answer: it's b friend !

explanation:

pretty easy question !