A plumber is unable to repair a pump because he can only imagine the conventional use for his tools. Which of the following does the plumber's problem best exemplify?

A) a well-defined problem
B) heuristic problem solving
C) a form of mental set
D) representational thinking

Mental Set

A frame of mind involving an established way of thinking about a problem or situation, which can both aid and hinder problem-solving.

Conventional Use

The traditional or widespread accepted use or application of an object, concept, or procedure within a culture or community.

Plumber

A professional specializing in installing and maintaining systems used for potable (drinking) water, sewage, and drainage.