Answer:
The answer is functional fixedness.
Explanation:
Functional fixedness is described as 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 might not realise it's also possible to use a utility knife or even a ruler.
Studies show that very young children do not present functional fixedness. Instead, this phenomenon appears around age seven, when children learn to use objects "properly".