The candidates’ . . . . . . . at the polls was . . . . . . . as he won with a striking margin.

The correct answer is: B. victory, overwhelming.

The candidate’s victory at the polls was overwhelming, as he won with a striking margin. This means that the candidate won by a large number of votes, which is a sign of his popularity and support among the voters.

The other options are not as relevant to the sentence. A claim is a statement that is made, but which may not be true. An image is a picture or representation of something. A strategy is a plan of action. A candidature is a person’s application to be a candidate for a position.