Jamie and lynn were sure that they had answered most of the multiple-choice questions correctly because "the questions required only common sense." however, they each scored less than 60% on the exam. this best illustrates
a) a confounding variable.
b) random assignment.
c) hindsight bias.
d) overconfidence

d) Overconfidence

Explanation:

What is Overconfidence?

This occurs when your subjective confidence in your own ability exceeds that of your objective or actual performance.

This is when someone overestimate their abilities to do things , they believe they can do more than they can in reality .

Some people become overconfident because they have been told that they are the best at something, some are just driven by their ego .

answer; depression and breathing related sleep disorder(independent);

answer; is commonly believe to be "the" culture of a society;