Answer:
la respuesta es: eran
English translation: Claudio and Carlos were surf teachers.
Emotions in the past
Estar conjugated in the past tense is estaban.
Estaban contentos= they were happy
Traje de bano
because it is talking about the beach and traje de bano is a bathing suit.
botas is boots
abrigo is a coat
blusa is a blouse