I’ll be ______ their cat while they are away on holiday.

Looking after

Looking in

Looking at

None of these

I’ll be looking after their cat while they are away on holiday.

میں ان کی بلی کی دیکھ بھال کروں گا جب وہ چھٹی کے دن دور ہوں۔

"Look after" means to take care of something or someone.