Identify the part of the following sentence that has an error in it.
(A) Beware of
(B) that fellow -
(C) he will stick
(D) for nothing.

Correct option is D

Error part: (d) (D) for nothing
What is wrong (in detail):
• The verb “stick” in this context needs the preposition to, not for.
• Correct expression: stick to (to continue/adhere/obstinately remain) depending on meaning.
Correct sentence: Beware of that fellow—he will stick to nothing.
Grammatical Rule (English):
• “stick to” is the correct verb-preposition combination (stick to something).
व्याकरणिक नियम (Hindi):
• “stick” के साथ सही preposition to आता है: stick to = किसी चीज़ से चिपके रहना/पालन करना।
Hence, option (d) is the correct answer.