This year was especially important because each of the girls had held part-time jobs over the summer In this sentence, a synonym for the underlined word would be correctly spelled
signifacant
significent
signifacent
significant

It is the last one, Significant

Explanation:

where is the writing? (so i can answer)

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.