Answer:
The correct sentence is: He did his job fast but also very efficiently.
According to the sentence, He did his job fast but also very efficiently. Therefore, correct option is A.
An adverb is a word that defines a verb. For example, he ran quickly. Here, quickly is the adverb because it is describing how he ran.
An adverb is a word that modifies a verb, adjective or another adverb, or sometimes a whole clause/sentence. It generally answers the question how? where? or when?.
According to the sentence the correct option is A because here the words fast and efficiently are correctly fit in the blanks. Fast and efficiently here define as a adverb as it modify the verb and define the action.
Moreover, it also narrate that he did his job fast along with good efficiency that prove his efficiency for work. Rest all options are incorrect.
Therefor, correct option is A.
Learn more about Adverb, refer to the link:
https://brainly.com/question/8554630
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