Answer:
B. the marginal revenue product of major league baseball players is high relative to college professors.
Step-by-step explanation:
For becoming a college professor involves more amount of efforts and dedication than the baseball players.
Also under the baseball matches there are numerous sponsors as looking for advertisement and promotions, as huge public is interested in such matches.
Therefore as large funds are invested and that the players earn accordingly more, as tickets are also charged.
The marginal revenue from baseball is therefore more, as the cost is less as compare to the cost in becoming professor.