Which of the Following Is the Most Reasonable Explanation for Why

Which of the following is the most reasonable explanation for why people rely on mental shortcuts and schemas even though they can lead to biases?

A) Because most people are too lazy to use careful thought when making decisions
B) Because people are taught to use mental shortcuts in place of careful thought when making decisions
C) Because the metal energy required for every single decision would be so great that it would be exhausting and inefficient
D) Because most people are not intelligent enough to use careful thought when making decisions