Choose the option that best completes the sentence. The man is not as powerful as he once was, his influence has considerably _______

The man is not as powerful as he once was, his influence has considerably diminished.

The word "diminished" means something that has become less or decreased in size, extent, or importance. In this context, it perfectly completes the sentence by indicating that the man's influence has decreased over time.

Let us examine why the other words are not suitable:

• Toppled: This term usually means to fall or push over something. It's often used in a context referring to overthrowing a regime or a government, which doesn't quite fit here.
• Quelled: This means to put an end to or to subdue something, often used in the context of quelling a disturbance or a rebellion. It doesn't fit the context of something naturally decreasing.
• Discarded: This word means to throw something away or to get rid of something. It's generally used in a context different from influence decreasing over time.

Therefore, diminished is the most appropriate choice as it aligns with the context of the man's influence reducing.