Critical Reasoning

For a university study on exercise habits, three equal groups were each led in one type of exercise for 45 minutes each day for a month: rowing, jogging, and dancing. When surveyed three months later, about half of those in the jogging and rowing groups were still participating in that activity at least twice per week, but for the dance group that figure was closer to 80%. It can be concluded, then, that of the three types of exercise dance is the activity that people are most likely to continue pursuing once they've started.

Which of the following is an assumption upon which the argument relies?

(A) Of the survey participants who changed to a different type of exercise after the survey ended, fewer changed from dance to another activity than changed from either jogging or rowing to dance.

(B) Joggers and rowers are no more likely than dancers to become injured while pursuing their chosen activity.

(C) Dance is an activity for which participants are less dependent on favorable weather than jogging and rowing are.

(D) The ratio of study participants who chose their activity to those who were randomly assigned their activity was no lower for jogging and rowing than it was for dancing.

(E) The number of participants in the dance group was no lower than the number of participants in the jogging and rowing groups.

OA D

Source: Veritas Prep