Which one of the following sentences has a subject pronoun?

What following sentences?

To determine which sentence has a subject pronoun, we need to identify the pronouns that can be used as subjects in a sentence. Subject pronouns include: I, you, he, she, it, we, and they.

Now, let's analyze the sentences:

1. "The book is on the table." - This sentence does not have a subject pronoun. The subject of the sentence is "The book," which is a noun phrase, not a pronoun.

2. "She loves to read." - This sentence has the subject pronoun "she." It is being used to represent a female person.

3. "They are playing in the park." - This sentence has the subject pronoun "they." It is being used to represent a group of people.

Therefore, the sentence that has a subject pronoun is: "She loves to read."