Answer:
C). The Availability heuristic.
Explanation:
'Availability heuristic' is exemplified as the cognitive shortcut in which a person proposes a conclusion or judgment about the probability of the occurrence of an action or event on the basis of the specific illustrations that immediately strike to his/her mind at the time of evaluation.
As per the question, the given description demonstrates the effect of 'availability heuristic' as the judgment('overestimation of how long they actually remain awake') is determined by the illustrations of moments that are easier to recall/remember at the moment. Therefore, the conclusion/decision was based on 'available examples' and thus, option C is the correct answer.