Correct option is A
Option (a) contains the grammatical error.
The error is in the phrasal verb “shirked away.” The correct usage is
“shirk” without “away”. “Shirk” is a
transitive verb and does not take an adverb like “away” in this context.
Correct sentence: "Arun never shirked new assignments."
Grammatical rule used:
Avoid unnecessary adverbial particles in transitive verb structures when the verb already expresses complete meaning.
Example: He shirked responsibility for the error.
Information Booster:
Common wrong usage: shirk off, shirk away
Correct usage: shirk duties, shirk work, shirk responsibility