The electric charges are generated by rubbing are:
A) Dynamic
B) Static
C) Neutral
D) None of the above

Hint: When an object is rubbed against another, there occurs an imbalance in charges, as a result of this imbalance, charges appear on the surface of the object. These charges remain immobile unless they have a path to flow. This path is provided through a circuit.

Complete answer:
The imbalance of positive and negative charges are created on rubbing as charges build up at a point. This imbalance of charges may lie within the object or on its surface. Such charges remain in their position unless they can move with the help of electric charges or electrical discharge.
As discussed, since charges produced on rubbing remain stationary, that is they remain in one place instead of moving, therefore, they are referred to as static charges.
Static charges are mainly induced in the body due to the transfer of negative charges from one body to another while rubbing.

Thus, option (B) is correct.

Addition Information:
There are two kinds of charges depending upon their flow. One is static charges, as discussed above, they are immobile in nature. The other kind is Dynamic charges. This kind of charges flow, as due to the flow of these charges through a conductor, electrical current is generated as thus we get electricity.
Dynamic charges are generated, due to the flow of electrons.

Note: Another way by which the effect of static electricity can be felt is by rubbing a comb in our damp hair and bringing it near some bits of paper. We would see that the comb attracts those bits of paper. This happens due to static charges.