What heuristic estimates the probability of something occurring based on how easily one recalls relevant occurrences of the event?

a) representativeness

b) expected value

c) subjective utility

d) availability

edit: answer is D

The answer is Availability. Availability heuristic estimates the probability of something occurring based on how easily one recalls relevant occurrences of the event. The availability heuristic judges the probability of events by how quickly and easily examples can come to mind ... Some events are easier to recall than others, not because they are more common but because they stand out in our minds.