Learning English

I had to do this today in the "after school class."
This is what you have to solve in order to show everyone you can use English. I think it is simply RIDICULOUS.

Choose the correct ending to this sentence:

I do not understand
a) why Mother should object to my playing the piano.
b) why Mother tries to discourage me to play the piano.
c) why Mother opposes to the idea of my playing the piano.
d) why Mother should disagree to me in my plan to play the piano.