Answer:
B. Functional fixedness
Explanation:
Functional fixedness: In psychology, the term "functional fixedness" is described as one of the cognitive biases that hinder an individual's tendency to utilize different objects in only ways that the object can be traditionally used. It was first formalized in the Gestalt psychology.
However, an individual can overcome functional fixedness by using different alternatives.
In the question above, Martine is experiencing "functional fixedness".