This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to increase mental strength
Read everything.
Recent studies show that people who enjoy reading novels are more easily able to empathize with others, a sign of a strong and well-rounded mind. If you want to work on increasing your mental strength, read a variety of things that you enjoy.

Choices:
A). This cannot only help you gain the mental maturity to do more deep reading, but it will also give you a filter that you can practice in your mind. Examples of good books include : Fiction and non-fiction screenplays informative political texts business or social studies books Increase your reading capacity.
B). You can read the works of a few other authors, or review several books that are similar to your own books. These types of books can also increase your physical and mental strength.
C). You don't have to jump straight into reading ulysses if you want to improve your mental strength, and in fact trying to read something too difficult might turn you off reading entirely. Instead, focus on reading things you enjoy.
D). Reading is an excellent outlet for thoughts and strong connections, as well as reducing stress and mental illness. Keep in mind that writing down every thought or feeling you have and then trying to figure out the origin of that feeling, ending your writing when you feel upset, depends on your studying style.
The answer is:
C).