Final answer:
In Spanish, the pronouns 'tú' and 'usted' are used to address people, not pets. When referring to a pet in Spanish, it is common to use the same pronouns that you would use for a human. Many people use 'tú' when speaking to their pets.
Step-by-step explanation:
In Spanish, the pronouns "tú" and "usted" are used to address people, not pets. When referring to a pet in Spanish, it is common to use the same pronouns that you would use for a human. Many people use "tú" when speaking to their pets, as they consider them part of their family. So, the correct answer is C. "Tú."
Learn more about Spanish pronouns and addressing pets