Coerce means to do something by using force or threats, he wants to force himself into thinking of it but could not achieve it because his muscles were preventing it.
To Impress Teresa
Explanation: I read this book last year
B) closely connecting the different ideas
That's only my best guess though; I'm more of a science & math guy. But good luck!
Answer:
a : she suffers from ulcer
b : James was shaking with laughter
c : I am here because of you