Question

one of the goals of the allies was to support russia by
fighting along side of them in stalingrad.
conducting air strikes in stalingrad.
supplying them with arms and ammunition.
pressuring both germany and italy.

Explanation:

During World War II, the Allies supported the Soviet Union (Russia) mainly through providing military supplies like arms and ammunition. Fighting alongside in Stalingrad was mainly Soviet forces, air strikes in Stalingrad wasn't a primary Allied support method here, and pressuring Germany and Italy was broader. Supplying arms/ammunition was a key support way.

Answer:

C. supplying them with arms and ammunition.