As far as I know, the answer is B (breaking a rock)
B.
Isotopes is an atom has same number of electrons and protons but different number of neutron.
c group A is the correct answer

explain how static energy is generated?
Answer:
Hi, there! ♚♛♕♔ッ✨♚
Static electricity is the result of an imbalance between negative and positive charges in an object.
These charges can build up on the surface of an object until they find a way to be released or discharged
Hope this helps!!
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