Which sentence contains a pronoun shift? Morgan gave his new business card to Antonio and me. If one eats sensibly, he or she can expect to feel better. If a runner wants to win, they should practice frequently. When employees park in the garage, they must pay, too.

The sentence with a pronoun shift is "If a runner wants to win, they should practice frequently."

A pronoun shift is an error in grammar in which a particular type of pronoun shifts to another. In the sentence, the pronouns used are ‘runner’ and ‘they’. Single pronouns should refer to singular anticedents.