Hello! The answer to your question would be as followed:
Hunter-gatherers
<u><em>b. moved constantly in search of food</em></u>
The first alternative is correct (A).
The Cold War opposed two powers aimed at dominating the world economic system. The US aimed at developing capitalism and expanding the democratic system, while the Soviet Union aimed to implement the communist system. Communist systems are characterized by state control of the means of production, so that usually only one party controls each communist country.
