The buildup of charges on an object is called
a. static discharge.
b. static electricity.
c. positive charge.
d. negative charge.

Option (b) is the correct answer.

Explanation:

When two objects which are not good conductors are rubbed together then due to friction there occurs opposite charges on the objects.

For example, when we comb our hairs then both comb and hairs get electrically charged.

This formation of charges is known as static electricity.

Therefore, we can conclude that the buildup of charges on an object is called static electricity.