In bringing an electron towards another electron, the electrostatic potential energy of the system will

Explanation

Electrostatic potential energy is the energy associated with the interaction between charged particles due to their electric fields. When two electrons are brought closer together, their like charges result in a repulsive force between them. Work must be done to overcome this repulsion and bring the electrons closer, increasing the electrostatic potential energy of the system. Option A is correct because the potential energy increases as the electrons are brought closer together. Options B, C, and D are incorrect because they do not accurately reflect the increase in potential energy that occurs in this scenario.