Question

juan es simpático. ____ es mi amigo. él ella ustedes tú

Explanation:

Juan is a masculine Spanish given name, so the correct singular masculine subject pronoun "Él" (meaning "He") is required to refer back to Juan. The other options do not match: "Ella" is feminine, "Ustedes" is plural formal, and "Tú" is singular informal second-person.

Answer:

Él