• # question_answer ) The potential energy of a system increases if work is done A)  by the system against a conservative forceB)  by the system against a nonconservative forceC)  upon the system by a conservative forceD)  upon the system by a nonconservative force

The potential energy of a system increases if work is done by the system against a conservative force.   $-\Delta U={{W}_{\text{conservative}\,\text{force}}}$