What occurs when water droplets in the atmosphere become heavier than the air surrounding them can hold? A. fog B. clouds C. lightning D. precipitation

D. precipitation

Explanation:

When this occurs it causes precipitation, also known as rainfall. This is all part of the water cycle. Heat from the sun heats up the water on land to the point where it evaporates and accumulates and condenses in order to form clouds. Then as mentioned in this question the water droplets in the atmosphere become so heavy that the air cannot hold them and they drop in liquid form back down to the Earth until the process is repeated.

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current