Annoying
Beautiful
Carefully
Things are compared with other things to:
1. give them a deeper meaning
2. explainations
3. To show similarites
The Least common multiple of 30 and 35 would be 210
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.