Answer:
Option A. When Juliet says "In truth, fair Montague, I am too fond, And therefore thou mayst think my havior light:" she is telling Romeo that she is afraid that by expressing her feelings so freely that romeo will think she is too easily won.
Step-by-step explanation:
When Juliet says the quote provided above, she is expressing her fears of having showed her love towards Romeo so strongly and openly, that now he will think that she was easily won, and therefore that her feelings are not to be considered serious. She is trying to tell Romeo that because her love for him is so pure and strong, she could not control her emotions, but that he should know that the feeling is nothing but true and a serious matter.