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”.
I believe it is D.
Hope this is of help to you, and happy studying~!
~{Oh Mrs.Believer}
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Si quieres saber la traducción, es "recoger"
