I choose B because it was mainly about how reading helps your brain.
In the sentence:
My best friend wrote a funny poem about her pet rabbit.
The simple subject is 'friend'. Remember that a simple subject is the main word or words in a subject, so it does not include any of the modifiers that might describe, characterize or restrict the subject (in this case, the possesive 'my' and the adjective 'best')
Answer:
Why a character wants to do something, or like their reason for their actions. Or like what motivates that character to do what they wanna do
Hope this helped a little!
I would say the answer is D eye medications must be sterile
