When John uses his knowledge to reason,make decisions,and adapt to environmental challenges,he is

A) showing intelligence.
B) avoiding a mental set.
C) showing insight.
D) avoiding functional fixedness.

Mental Set

A psychological tendency to approach problems in a specific way, using methods that have been successful in the past.

Functional Fixedness

A cognitive bias that limits a person to using an object only in the way it is traditionally used, hindering the ability to think of alternative uses.

Intelligence

The ability to acquire and apply knowledge and skills.