The theory that is contrary to disengagement theory is theory.

The answer is: activity

According to activity theory, older people would tend to increase the number of activity that they have as they get older in order to find relevance in their life. Disengagement theory on the other hand is the opposite. It believes that older people would gradually disengage from activities with other people since they've move on to other interest that related to self actualization.

answer; ///approx///5,000 miles;