The correct answer is C) high military spending.
The factor that hurt the economy of the Soviet Union during the 80s was the high military spending.
During the Cold War, the Soviet Union tries to expand Communism in many regions of the World. They wanted to maintain the control of places such as Bulgaria, Hungary, Poland, East Germany, and Romania. In competition against the United States that wanted to stop the spread of Communism in the world, Russia invested millions of dollars in weaponry. So yes, the that hurt the economy of the Soviet Union during the 80s was the high military spending.
The other options of the question were a) lower oil prices, b) poor agriculture production, and d) more spending on social welfare.
