Delhi is said to be one of the oldest existed cities in the world, alo
Right Answer is: B
Option B is grammatically incorrect. The use of “existed” is incorrect here. It is the past participle form of the verb “exist”. A verb cannot be used to modify a noun. Therefore, its use is incorrect here. It should be replaced by adjective “existing”. It is used to refer to something that exists now.
Example: We must deal with the existing issues first.