Choose the sentence that uses the correct question tag:

The correct answer is Option (1) → This auto goes to the railway station, doesn’t it?

Question tag after “this / that / these / those”:

In the tag, “this” and “that” become “it”. “These” and “those” become “they”. “Goes” is in the simple present with no helping verb, so the tag uses “doesn’t”. So the tag is “doesn’t it”.

Why the Other Options are Incorrect?

Option 2: These shoes were bought at the Agra market, weren’t it? — Incorrect. The given sentence says “These shoes ..., weren’t it”. “These” is plural, so the pronoun in the tag is “they”, not “it”.
Corrected: These shoes were bought at the Agra market, weren’t they?

Option 3: Ramesh didn’t pay the milkman this month, didn’t he? — Incorrect. The sentence has “didn’t”, so it is negative. A negative sentence takes a positive tag.
Corrected: Ramesh didn’t pay the milkman this month, did he?

Option 4: The doctor is checking the X-rays now, doesn’t he? — Incorrect. The helping verb in the sentence is “is”, so the tag must repeat “is”, not use “does”.
Corrected: The doctor is checking the X-rays now, isn’t he?