The following sentence has been divided into four segments. Identify the segment that has a grammatical error.
When he resigned, / the company offered him / a huge sum of money but / he refused to agree to it.

Correct option is C

The error lies in (c) he refused to agree to it.
Explanation:
The phrase "refused to agree to it" is redundant, as "refused" already implies disagreement. The correct phrasing should be "he refused it."
Correct sentence: When he resigned, the company offered him a huge sum of money, but he refused it.
Grammatical rule used: Avoid redundancy when the meaning of one word already encompasses the meaning of another.
Explanation of the grammatical rule in Hindi: "Refused" का अर्थ है अस्वीकार करना। "To agree to it" जोड़ने से वाक्य में अनावश्यक दोहराव हो जाता है।