Many people believe that college get-togethers always involve profanity and chaos,

Many people believe that college get-togethers always involve profanity and chaos, when quite the opposite is true. more and more young people today spend social time together engaged in productive, respectable activities.

what type of context clue, indicated by the text "quite the opposite" and "productive, respectable," develops the meaning of the word profanity?

contrast
definition
comparison
example