In the given sentence, identify the segment which contains a grammatical error.
Doctors say that home isolation is far more effective than hospitalise in cases of mild infection.

Correct option is B

Option (b) contains an error.
Error: "than hospitalise" is incorrect as "hospitalise" is a verb.
Correct usage: It should be "than hospitalisation" (noun form) to maintain parallel structure with "home isolation" (noun).
Grammatical Rule Used: When comparing two nouns, both elements must be in the same grammatical form.
Example: Meditation is more effective than medication.
Information Booster: Gerunds (-ing forms used as nouns) and nominal forms are often required in parallel structures.