What are the pronouns in this sentence. Betty and the family visited New York during summer vacation?

There are NO pronouns in the sentence.

A pronoun is a Word that takes the place of a noun in a sentence; for example:

They visited New York during summer vacation.

• The pronoun 'they' takes the place of the compound subject of the sentence 'Betty and the family'.

Betty and the family visited it during summer vacation.

• The pronoun 'it' takes the place of the direct object noun 'New York'.