What combination led to the German defeat at the Battle of Stalingrad?

Question

Russian ground forces and the American air strikes
Russian ground forces and the American air strikes

Russian troops and the Russian winter weather
Russian troops and the Russian winter weather

Russian and British troops
Russian and British troops

Russian and German fuel shortages

Answer 1

The combination of Russian ground forces and the harsh Russian winter weather played a significant role in the German defeat at the Battle of Stalingrad. The Russian troops were able to withstand the harsh conditions and launch successful counterattacks, while the extreme cold and lack of supplies severely impacted the German forces.