one reason why in the short​ run, the marginal product of labor might increase initially as more workers are hired is that part 2 a. specialization allows a worker to focus on one​ task, thereby increasing her proficiency at that task. b. beyond some​ point, a firm has hired too many workers. c. the first workers hired get to use the best equipment. d. the best workers are hired first and later hires are not as skillful.