Answer:
C. No one should leave a conversation feeling like he or she lost - all effective communication should promote a "win-win" outcome
Explanation:
According to Stephen Covey, effective communication has to do with being able to clearly state one's opinion in such a way that the listening party or receiver would understand and give proper feedback.
Another focus of effective communication according to him is that none of the involved party ends up feeling like they lost, but rather it should be a win-win situation.