The following sentence has been split into four segments. Identify the segment that contains a grammatical error.
Do you want / to visit a zoo / when you / go to Ahmedabad?

Correct option is D

Option (d) contains a grammatical error.
Correct sentence: Do you want to visit a zoo while you are in Ahmedabad? OR ...when you go to Ahmedabad? (context-dependent)
However, based on the present sentence structure, "go" should be in present simple tense, and it is not an error grammatically.
The real issue lies in the awkwardness of the phrase "to visit a zoo" based on intent.
But as per grammatical conventions, the original sentence is correct.
Hence, there is actually No Error.
It appears there was confusion in marking.
�� Information Booster: When using "Do you want to...?", it’s typically followed by the base form verb. No error if tenses match.