Lucas wants to try out for the soccer team in three months. he knows that he has to be able to play vigorously for at least an hour. right now, he can play for 20 minutes.

what is the most appropriate short-term goal for lucas ?

a. to play vigorously for 10 minutes by the end of one week

b. to play vigorously for 30 minutes by the end of two weeks

c. to play vigorously for 50 minutes by the end of one week

d. to play vigorously for 90 minutes by the end of two weeks