Ross is training for a half marathon, which is 13.1 miles long. within four months, he has progressed to an 11-mile practice run. if ross takes two months off from training, what will most likely occur? a. ross will be able to run farther because the recovery time will increase his fitness. b. ross will switch sports because he will forget the proper mechanics of running. c. ross's fitness level will diminish from what it was two months ago. d. ross will reach a level of fitness that allows him to advance from running to sprinting.