Choose the sentence that uses the correct question tag:

The correct answer is Option (1) → Meera’s lost her bus pass again, hasn’t she?

Question tag after “’s” = has:

The short form ’s can stand for “is” or “has”. In “Meera’s lost her bus pass”, Meera is the one who lost it. So ’s stands for has (Meera has lost). So the tag repeats “has”. The sentence is positive, so the tag is “hasn’t she”.

Why the Other Options are Incorrect?

Option 2: It’s snowing in Manali today, hasn’t it? — Incorrect. The given sentence says “It’s snowing”. Here ’s stands for “is”, because we say “is snowing”. So the tag uses “isn’t”.
Corrected: It’s snowing in Manali today, isn’t it?

Option 3: Sunita’s brother is joining the navy, isn’t she? — Incorrect. The tag uses the pronoun for the subject. The subject is “brother”, not “Sunita”. So the pronoun is “he”.
Corrected: Sunita’s brother is joining the navy, isn’t he?

Option 4: We weren’t told about the school holiday, weren’t we? — Incorrect. The sentence has “weren’t”, so it is negative. A negative sentence takes a positive tag.
Corrected: We weren’t told about the school holiday, were we?