Question

What is Juliet saying?

Answer 1

Short Answer: A. There is nothing else it could be.
B
B is incorrect. She is already light years ahead of  him.

C 
C is not right. She knows from other places that he does not think of her as a feather brain. She is just afraid of what he thinks of her feelings for him.

D
D is not right either. Her own thoughts are what concerns her. More to the point her she is worried about what he thinks of her.