The correct option is B 9 litre 750 ml
Given:
Capacity of Bucket to hold water = 30 litre
Water in the bucket = 20 litres 250 ml
Space remaing in the bucket = Amount of water bucket can still hold
Amount of water bucket can still hold = 30 litre - 20 litre 250 ml
litre ml30 000− 20 250–––––––––––––––9 750
i.e, Bucket can hold 9 litre 750 ml more water.