Which of the Following Statements Best Describes the Cocktail Party

Which of the following statements best describes the cocktail party effect?

A) A strong urge to nap at inappropriate times, such as during meals or in the middle of conversations.
B) The ability to create a false sensory perception not related to real external stimuli.
C) The ability to filter out auditory stimuli and then to refocus attention on something that appears more meaningful.
D) A mental state that occurs in compliance with instructions and is characterized by lack of voluntary control over behavior.