Will be with my gf next day ;)

Can someone answer this pls ill give brainliest both ser and estar mean ‘to be’. in what situations do we use estar? estar, venir, and ir are considered irregular verbs. what makes a verb “irregular”?

Yo con ropa cómoda para ir al gimnasio. a. te visto b. se visten c. nos vestimos d. me visto

Choose the sentence that accurately expresses a hurt back. me duele la mano. me duele la espalda. me duele el cuello. me duele el brazo.