Amy's opportunity cost of going to the movies is
a. the price of the ticket.
b. zero, if she has a free pass to the movie.
c. the price of the ticket plus the value to amy of what she would have chosen to do with her time had she not chosen to go to the movies.
d. both b and c

Iwould say 

c.  the price of the ticket plus the value to amy of what she would have chosen to do with her time had she not chosen to go to the movies.

i was going to say d but then i looked at b again and even if she has a free pass she might still want to buy snacks.

if you think that b could be correct then go for d but i am going to say its c

hope that in some way : )

That's awesome

Explanation:

how did you get so many . . .