Answer:
I am not one hundred percent sure, but I'd say C is the correct answer.
Step-by-step explanation:
Organization has to do with the overall order of the essay, it doesn't really affect transitions.
Conventions means the overall grammar and punctuation of the essay, which also does not affect transitions.
Voice does not correlate to a written essay with transitions..
Ideas and Content within the transition help it flow better in the grand scheme of things, as the transition has to be clear and smooth in the way it is communicated.