I believe you have a typo when it comes to the first option - it should be athletics, not athletic. The word athletic is an adjective, and the word athletics is a noun.
That being said, the correct answer is A. athletics. Even though this noun ends in -s, it is still singular. The rest of the options are all plural nouns.
A) Discussing what you have read can help you understand what you have read.
Answer:
informal definition
integrity means standing for what is right
formal definition
integrity can be defined as a virtue of standing for what is right
Answer:
mead is usually pronounced as "meed"
Explanation: