Which best describes Mary's main conflict in the novel?

A.
She wants to stay as she is, but the people of the manor try to force her to change.

B.
She is constantly fighting with Colin because he is almost as spoiled and stubborn as her.

C.
She is quite lonely, but she fears that no one will like her.

D.
She wants the secret garden to thrive, but she cannot make anything grow in it.