Martine needs a hammer but cannot find one. As she looks around her apartment, her gaze passes over a metal paperweight and some other objects that could potentially serve as a makeshift hammer. However, she is so focused on these objects' typical uses that she does not think to use any of them as a hammer. Martine is experiencing which of the following?
A. The fundamental attribution error
B. Functional fixedness
C. Blindsight
D. The Hawthorne effect
E. Repression