When Carlos presented the report to the class, he brought in samples of the foods.

• first-person pronoun
• second-person pronoun
• third-person pronoun
• reflexive pronoun

When Carlos presented the report to the class, he brought in samples of the foods.

The pronoun "he" in this sentence is a third-person pronoun.

In the sentence "When Carlos presented the report to the class, he brought in samples of the foods," the pronouns used are:

1. First-person pronoun: There is no first-person pronoun in the sentence. First-person pronouns refer to the speaker or writer (e.g., I, me, my).

2. Second-person pronoun: There is no second-person pronoun in the sentence. Second-person pronouns are used to refer to the person being spoken to (e.g., you, your).

3. Third-person pronoun: The third-person pronoun used in the sentence is "he," which refers to Carlos. Third-person pronouns are used to refer to someone or something that is not the speaker or writer (e.g., he, she, it, they).

4. Reflexive pronoun: There is no reflexive pronoun in the sentence. Reflexive pronouns are used when the subject of the sentence also receives the action of the verb (e.g., myself, yourself, himself).

The correct answer is "he." "He" is a third-person pronoun because it refers to Carlos, who is not the speaker or the person being spoken to. To determine the answer, you need to identify the pronoun that is used to refer to Carlos. In this sentence, "Carlos" is the antecedent (the noun being referred to) and "he" is used to replace that noun. By understanding the different types of pronouns and their functions, you can determine the correct answer.