24. Recently, a Little League game was played in the dark at Cornshucker's Park. Nobody had told them where the light switch was.

Rewrite:

24. Recently, a Little League game was played in the dark at Cornshucker's Park. Nobody had told the umpires and the coaches where the light switch was.

Why?

The "them" doesn't refer back to any specific plural noun (people who had the authority to turn on the lights). Therefore, the noun that names which authorities were not informed should be used in place of "them".