Claudia wants to send a fragile vase to her parents for their anniversary, but she can't find any appropriate packing material in her house. She decides to pop some popcorn and use that to pack around the vase. In this case, Claudia has

a. demonstrated functional fixedness in solving her problem.
b. effectively utilized the availability heuristic in solving her problem.
c. overcome functional fixedness in solving her problem.
d. utilized an elimination-by-aspects strategy to solve her problem.

C