Parts of the following sentence are given as options. Identify the segment that contains a grammatical error.
His family lives in Bihar but he works on a factory in Mumbai.

Correct option is D

The segment of the sentence that contains a grammatical error is option (d) on a factory
Explanation:
· The correct preposition to use here is "in," not "on." The phrase should be "in a factory," as the preposition "in" is typically used when referring to working inside a building or place.
· Corrected Sentence:
"His family lives in Bihar, but he works in a factory in Mumbai."
Grammatical Rule Involved:
· Prepositions of Place:
· "In": Used to describe being inside a place, such as a building, room, or enclosed area.
· Correct Example: "She works in a hospital."
· "On": Used to describe being on a surface or at a location, like "on a table" or "on a street," but not typically used for buildings or workplaces.