Answer:
B. Early, now, reluctantly.
Step-by-step explanation:
Adverbs are those words or groups of words that help change/ modify or add meaning to the verbs in a sentence. They may not always be needed in a sentence but if they are in any sentence, they will always add to the verb of the sentence, either changing the form or adding to the already existing verb.
In the sentence-
Some baby-boomers who retired early now find themselves reluctantly looking for another job
The verbs are "retired, find, looking".
Now, the words associated with these particular verbs are "early, now, reluctantly".
Early tells the 'when' of the verb 'retire', 'now' tells the 'when' of the verb 'find' and 'reluctantly' acts both as an adverb and an adjective to the 'how' of the verb 'looking'.
Thus, the adverbs in the sentence are "Early, now, reluctantly".