Question

using what you know about electromagnetic force, what happens when an electron approaches another electron? they attract each other they repel each other nothing the charges on the neutrons change from negative to positive

Explanation:

Electrons have a negative charge. According to the principle of electromagnetic force, like charges repel each other. Since both electrons are negatively - charged, they will repel. Neutrons have no charge, so the last option is incorrect. And "nothing" is wrong as there is an electromagnetic interaction. Attraction occurs between opposite charges (e.g., electron and proton), not between two electrons.

Answer:

They repel each other