Define the concert risky behaviour

risky behavior is risk taking behavior described as any conciously  or non-consciously controlled behavior with a perceived uncertainty about its outcome, and/or about its possible benefits, or costs for the physical, economic or psycho-social well-being of oneself or others.

Explanation:

on the first day of new student week, amber revealed to her roommate that she is a lesbian. this is an example of self-disclosure.