Answer: Option 'D' is correct.
Explanation:
Precipitation is the particle of water either in the form of solid or liquid that is formed in the atmosphere and fall into the ground.
Main types of precipitation are as follows:
1) Rain : It is the water droplets in liquid form and is type of precipitation , as long as the temperature is more than freezing point, the rain will fall.
2) Snow : It is in the solid form and type of precipitation whenever temperature is less than freezing point.
3) Sleet: It is small and round in shape and it is just like a ice pellets and another form of precipitation.
4) Hail : It is completely ice and only falls during thunderstorm.
So, Precipitation includes rain, sleet, snow and hail.
Hence, Option 'D' is correct.