Fill in the blank with the most appropriate question tag:

So, they are moving to Bangalore, ________?

aren't they

The correct answer is Option (2) - aren't they

• The statement "So, they are moving to Bangalore" is in the present continuous tense (are + moving).
• The question tag for a positive statement in the present continuous tense is "aren't they."

Therefore, the complete sentence would be: "So, they are moving to Bangalore, aren't they?"