When asked to imagine someone who fits the description "construction worker," many people picture a man in a hard hat and work clothes. such mental images of a group of people are examples of

Stereotype

Explanation:

In social psychology, the term stereotype refers to a thought widely adopted about specific types of individuals that seem to represent the entire group of those individuals. However, these thoughts or beliefs may not reflect reality.  

In this example, when asked to imagine someone who fits the description "construction worker" many people picture a man in a hard hat and work clothes. This is a thought or idea widely adopted about constructions workers that is not necessarily true. Therefore, this is an example of stereotype

answer; ///i believe the correct answer is (b) the writing of the ancients who lived in india after the indus valley inhabitants died out;