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 errorB. Functional fixednessC. BlindsightD. The Hawthorne effectE. Repression

The answer is B. Functional fixedness.

Explanation:

Functional fixedness refers to the inability to use an object in a different way  than usual. For example, a person looking for a pair of scissors to cut paper may not realise it's also possible to use a utility knife or even a ruler.

Some studies reveal that functional fixednes is not presented in young children. Instead, this problem might appear around age seven, when children learn to use certain objects "properly".