Explanation: In English grammar, comparative forms are used to compare two or more things. The comparative form of an adjective is used when comparing two entities, while the superlative form is used when comparing more than two entities. The comparative form of "large" is "larger," and the superlative form is "largest."
The original sentence, "Chennai is one of the largest cities in India," uses the superlative form "largest" to indicate that Chennai is among the biggest cities in India. However, the question asks for the comparative form, which compares Chennai to other cities in India.
The comparative form "larger" is used to indicate that Chennai is bigger than most other cities in India. The sentence "Chennai is larger than most other cities in India" correctly uses the comparative form to compare Chennai to other cities.
Option A is incorrect because it uses the incorrect comparative form "large" instead of "larger." The comparative form of "large" is "larger," which is necessary to compare Chennai to other cities in India.
Option C is incorrect because it negates the comparative form, which contradicts the original statement that Chennai is one of the largest cities in India. The sentence implies that Chennai is not bigger than most other cities, which is not the intended meaning.
Option D is incorrect because it uses the comparative form "as large as," which implies equality rather than a comparison of size. The original statement suggests that Chennai is larger than most other cities, not equal in size.
Therefore, the correct answer is Option B: "Chennai is larger than most other cities in India." This option correctly uses the comparative form to compare Chennai to other cities in India, indicating that Chennai is bigger than most other cities.