D. On the other hand
Take not of the conjunction words or rather conjunction, part a speech which is responsible for words that combines two or more clauses together. Combination would mean contradictory or consistent sentences or phrase into a single statement. “And”, “in addition”, “plus” are just some examples that are consistent or to connote clauses that agrees with each other. Here we observe that “on the other hand” suggest contrast between two disagreeing clauses. Furthermore, we can also use “however”, “but” and “on the contrary” and etc. to describe these differing clauses.