Arecent study found that when teenage drivers are in a vehicle with their peers, they are more likely to drive too fast and to take more risks. subsequent studies replicated these findings, suggesting that part of the reason is the impact of peers on the adolescent brain's sensitivity to rewards. a sociologist might also conclude that this is a case of

groupthink.                          

Explanation:

Groupthink: In social psychology, the term is defined as a psychological phenomenon that arises in a specific group of people having the desire for conformity and harmony leads to dysfunctional or irrational decision-making outcome. It can often lead to problems, for example, bad decisions, lack of creativity, excessive resistance to new ideas, etc.

Example: Outbreak of riots.

In the question above, a sociologist might also conclude that this is a case of groupthink.

if im not mistaken its a. collective emotional arousal

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.