Karl was posting signs on campus and he ran out of tape to put up the last sign.He could not figure out another way to put up the sign even though he was chewing gum and could
Have used the gum to put up the sign.Karl most likely did not come up with this solution
Because of

A) framing.
B) functional fixedness.
C) restructuring.
D) lack of insight.

Functional Fixedness

A tendency to think of things based on their usual functions, which may make it harder to solve a problem.

Framing

The way information is presented or worded, which can significantly affect decisions and judgments.

Insight

The capacity to gain an accurate and deep understanding of someone or something, often suddenly and intuitively.