Which statement is true? a. since many students drop out of college, estimating the effect of college education on cognitive development is complicated. b.diversity has decreased the long-term effects of a college educationc. the increased diversity of the college atmosphere encourages cognitive development. d.a college education had more positive effects on cognitive development in the past than today.

C. The increased diversity of the college atmosphere encourages cognitive development.

Explanation:

           The term cognitive means the mental processes of judgement, reasoning, exploring and remembering, etc.

           Cognitive development refers how individuals think, figure and explore out  things. It is the development of skills, knowledge, problem solving and also dispositions, which helps the individuals to think about and also to understand the world surrounding them. Brain development is a part of the cognitive development.

          In college, there is diversity in all the things. Students meet and interact with different students who are different in many things from each other. Therefore, college students learn and understand the surrounding atmosphere. They learn to think logically and act rationally at many different situation which encourages their cognitive development in this diversity.

Hence the true statement is --

C. The increased diversity of the college atmosphere encourages cognitive development.