Which of the Following Represents an Insightful Problem Solution

Multiple Choice

Which of the following represents an insightful problem solution?

A) A child uses his or her shoelace to tie two sticks together to knock an apple from a tree.
B) A poker player discards his lowest card and draws an ace.
C) A geometry student applies a formula to figure the area of a triangle.
D) A physician decides to perform surgery even though the odds are against its success.