Answer:
The hindsight bias
Explanation:
Hindsight bias: In psychology, the term hindsight bias is defined as the propensity of an individual to overestimate his or her capability to forecast or predict a particular outcome related to some event that couldn't have been possibly foretasted or predicted.
Example: A person has predicted that it will rain today but it didn't then he or she claimed that he or she knew that the opposite is gonna happen.
In the question above, Megan’s reaction to the study is an example of the hindsight bias.