In the sentence "Yo, soy canoso," the correct option is "Me llamo Pedro."
Here's why:
1. "Yo, soy canoso" means "I am gray-haired," which describes a physical characteristic of being gray-haired.
2. "Me llamo Pedro" translates to "My name is Pedro," which is a proper way to introduce oneself by stating their name.
3. The other options, "Se llamas Pedro" and "Te llamas Pedro," are incorrect because they use the wrong pronouns. "Se" and "Te" should be replaced with "Me" to correctly indicate "My name is Pedro."