Identify the part of the following sentence that has an error in it:
(A) Cannot one
(B) do what
(C) one likes
(D) of his own accord?

Correct option is D

Error part: (d) (D) of his own accord
What is wrong (highlight):
• Subject is one, so pronoun must match it.
• “his” does not agree with “one”.
Correct expression: of one’s own accord (Hindi: अपने-अपने स्वेच्छा से / अपनी मर्ज़ी से)
Correct sentence: Cannot one do what one likes of one’s own accord?
Grammatical Rule (English):
• Pronoun must agree with antecedent: one → one’s
व्याकरणिक नियम (Hindi):
• सर्वनाम का प्रयोग antecedent के अनुसार होता है; “one” के साथ one’s आता है, “his” नहीं।
Hence, option (d) is the correct answer.