Final answer:
In Spanish, 'me' and 'te' are used to indicate possession or feeling, with 'me' referring to oneself and 'te' referring to you (informal).
Step-by-step explanation:
a. Me duele el estómago? Sí, me duele el estómago.
b. Te duele el estómago? Sí, te duele el estómago.
In Spanish, the pronouns 'me' and 'te' are used to indicate possession or feeling. In these sentences, 'me' is used when someone is talking about themselves, and 'te' is used when someone is talking about you (informal).
Learn more about Spanish pronouns