N the following sentence what is antecedent of pronoun our Theresa and I had to make sure that packages were delivered today.?

The antecedent of the pronoun "our" in the sentence "Theresa and I had to make sure that packages were delivered today" is Theresa and I.

Here's why:

* Antecedent: The word or phrase that a pronoun refers to.

* Pronoun: A word that takes the place of a noun.

In this case, "our" is a possessive pronoun that indicates something belonging to "Theresa and I."