The sentence is c because which wasnt needed
I would say try to learn it every time also always test yourself, for a student and a adult teaching try to get the student happy because it the student is upset they won't get anywere. Hopefully that helps you ❤
Answer:
ability to write better
Explanation:
it means that they will be able to write better
17: No error
18: Not
19: Was asked
20: Which
