It would be a mistake to provide new gloves to the school's baseball players. In no time the football players will want new equipment. Then the tennis players will want new courts, the hockey players will want a new arena, the swimmers will want a new pool, and the golfers will want their own special course. The costs for these facilities will go through the roof.
a. Red herring.
b. Accident.
c. Slippery slope.
d. Appeal to pity.