Wordsworth said that writing a poem required select all that apply.

contemplation
talent and skill
powerful feelings
universal appeal

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 is d)

hope this !