He is averse . . . . . . . . hard work. A. on B. to C. at D. from

The other options are not as appropriate in this context. The word “on” is used to express a position or location. The word “at” is used to express a time or place. The word “from” is used to express a source or origin.

Here are some examples of how the word “averse” can be used in a sentence:

• I am averse to public speaking.
• She is averse to any kind of violence.
• The cat is averse to water.
• The politician is averse to taking risks.