You need either a bigger body, which is the middle area with your claims and supporting evidence, or a bigger thesis paragraph, which are all of your claims in general, or what you're trying to prove. I recommend using Google for examples or pointers.
Probaly the answer might be c
The first one is "the process or product cultivating living organisms"
The second one is "knowledge of and taste in fine arts and humanities"
The third one is "the customs, beliefs, and values of a group of people"
I hope this helps, Enjoy :)
Sick an be one of a synonym