The correct answer is option (D):
Rectify
The correct answer is "Rectify".
The word "vitiate" means to spoil or impair the quality or efficiency of something. It suggests corrupting, debasing, or making something less effective. Think of vitiating a contract, for example – making it invalid or unenforceable.
The options provided offer words with varying relationships to the core meaning of "vitiate."
* "Trust" is related to confidence and belief, not the opposite of corrupting or impairing.
* "Deaden" refers to reducing sensitivity or liveliness, which isn't a direct antonym.
* "Drain" implies removing something, often weakening it, which is closer to the meaning of "vitiate" than its opposite.
* "Rectify" means to correct something, to set it right, or to make amends. This is the direct opposite of "vitiate," as it suggests restoring something to its original, unimpaired state.
* "Amuse" means to entertain or cause laughter, which is completely unrelated.
Therefore, "rectify" is the best antonym because it represents the act of correcting or improving something that has been spoiled or impaired, which is the direct opposite of what "vitiate" describes.