Answer: The answer is Son
Explanation: It is the masculine form of "they are" which when added to the sentence means "My brothers are very hardworking."
The sentence says “ I never had to accept this job before.” Trabajo is a noun. If you are trying to say, “ I never had to work before ”, then It would be “trabajar” because it is after the verb “había”.
The answer is c. somos.
Since the subject is nosotros, we have to conjugate the verb to make them match. son matches with 'ellas, ellos, or uds.', somos matches with 'nosotros', eres matches with 'tú', and es matches with 'ello, ella, or ud.'