Question

which best describes how a proxy war differs from a traditional war?
the opposing powers in a proxy war engage in a propaganda war.
the opposing powers in a proxy war engage in a propaganda war.
the opposing powers in a proxy war use others to fight on their behalf.
the opposing powers in a proxy war use trade and economic means to fight each other.
the opposing powers in a proxy war never openly acknowledge their involvement.

Explanation:

A proxy war is where major powers use other states or groups to fight instead of directly engaging each other. Propaganda war can be part of any war, trade - economic means are not the defining feature, and not acknowledging involvement is not the key difference.

Answer:

The opposing powers in a proxy war use others to fight on their behalf.