A Problem Is Presented in the Textbook That Involves Arranging

Multiple Choice

A problem is presented in the textbook that involves arranging six matches to make four triangles. The triangles must be the same size, and each side must be equal to the length of one match. Most people are initially unable to solve this problem because they assume incorrectly that the matches must be arranged on a flat surface rather in a three-dimensional pyramid shape. This incorrect assumption illustrates how which of the following can be a major barrier to creative thinking?

A) a mental set
B) divergent thinking
C) a prototype
D) incubation