A" and "an" are indefinite article content that precede nouns or the adjectives modifying nouns. In English grammar, "a" and "an" are determiners, indicating they specify the id or quantity of one thing, and for both equally phrases, that quantity is "a person"—the word from which They are derived. As https://theprettierlife.com/discovering-your-dream-home-with-heather-fabris-real-estate-your-trusted-guide-in-realizing-your-vision/