A personal pronoun is .
any word that takes the place of a proper noun
any word that takes the place of a noun
a word that takes the place of a proper noun specifically associated with a person or speaker
None of these
In the given sentence, to which grammatical object does “they” refer?
If only Kevin and Charles had thought to talk to the umpires, they would have avoided the whole problem.
The umpires
Kevin and Charles
The whole problem