Question

static charges ____________ on things when they rub together.
jump
flow
build up
rewatch

Explanation:

When objects rub together, electrons can be transferred between them, causing static charges to accumulate or build - up on the surfaces of the objects. Charges don't jump in the context of simple rubbing for static electricity generation, and 'flow' is more associated with electric current in conductors rather than static charge formation by rubbing.

Answer:

C. build up