He seemed to feel the ____of some explanation.

He seemed to feel the ____of some explanation.
A、essential
B、wish
C、necessity
D、necessary
【正确答案】：C
【题目解析】：essential 本质；wish 希望；necessity 需要；necessary 必需品；题意：他似乎觉得有必要作些解释。C符合题意。