Identify the segment in the sentence which contains a grammatical error.
It is often said that the way to the man heart is through his stomach.

Correct option is C

Option (c) contains an error.
Explanation of error:
The correct phrase should be: “the man’s heart” (possessive form).
“The man heart” is incorrect as it lacks the possessive marker.
The noun “heart” needs a possessive noun: man’s.
Grammatical rule used:
Use the possessive form (with apostrophe-‘s’) to show ownership or relation.
Example:
Incorrect: The teacher book
Correct: The teacher’s book
Booster Tip:
When a noun owns another noun, use apostrophe + s (John’s house, girl’s voice, man’s heart).