Select the most appropriate option to substitute the highlighted segment in the given sentence. If there is no need to substitute it, select ‘No substitution’.
He replied mine letter after a month.

Correct option is B

The correct substitution for the highlighted segment in the sentence "He replied mine letter after a month" is (b) "replied to my letter."

• Explanation: The original segment uses "mine letter," which is incorrect. "Mine" is a possessive pronoun used incorrectly in this context. The correct possessive adjective before a noun is "my." Additionally, the preposition "to" is necessary after "replied" to indicate the action was directed toward the letter.
• Corrected Sentence: "He replied to my letter after a month."