Mateo Enjoys His Philosophy Class, and He Likes Listening to His

Mateo enjoys his philosophy class, and he likes listening to his professor lecture. However, because all of the tests follow the same format, Mateo tends to glaze over, allowing his mind to drift while listening to the test directions from his professor. As a result, Mateo completes the test incorrectly, but is surprised to receive a low grade. What of the following best describes the problem caused by his glazing over?

A) Mateo listened less critically than he normally would.
B) Mateo gave the professor the impression that he wasn't listening.
C) Mateo missed important details in what he was hearing.
D) Mateo was an ineffective listener.