Question

Which sentence makes the best use of a transitional word or phrase?

Answer 1

I believe the best answer is A.

Answer 2

The sentence that makes the best use of a transitional word or phrase is A: "Math was interesting to me in high school; likewise, it is interesting to me in college".

Likewise is an adverb which has three different senses. It can mean "similarly", "in addition" or "equally".  In A, the adverb means "similarly" since the speaker is telling that he enjoyed Math in high school and he continued enjoying it in college.