Select the pronoun whose antecedent is a new hospital.

The pronoun that refers to "a new hospital" is "it." For example, you could say, "A new hospital was built in the community, and it has already started serving patients." In this sentence, "it" stands in for "a new hospital," helping to avoid repetition while maintaining clarity. When using pronouns, always ensure the antecedent is clear. In some sentences, additional antecedents may confuse readers, so watch out for ambiguous references. A clearer example, without losing track of the subject, might look like this: "The new hospital opened last week, and it quickly filled with patients seeking care."