The correct options are
B Precipitation can be in the form of snow.
C Precipitation helps in filling lakes, rivers etc.
Clouds are formed when water vapour in the atmosphere condenses to form tiny water droplets.
Condensation refers to the process whereby water vapour cools down to form liquid droplets.
Precipitation is the process by which water droplets in clouds come back to the Earth's surface in different forms. Precipitation can occur in different forms like rain, snow, sleet, etc.