What was OPEC's main function during the oil crisis in the 1970s?

During the oil crisis in the 1970s, OPEC's primary function was controlling oil production. This organization, the Organization of the Petroleum Exporting Countries, aimed to coordinate and unify the petroleum policies of its member countries to ensure the stabilization of oil markets. By managing production levels, OPEC was able to influence global oil supply and, consequently, prices.

During this period, OPEC responded to geopolitical events, particularly the Arab-Israeli conflict and the subsequent oil embargo, by cutting production and thus driving prices higher. This control over production was crucial in leveraging the economic power of member states, highlighting OPEC’s role as a dominant force in the oil market. The ability to manipulate production levels directly impacted the availability of oil worldwide, underscoring the significance of their strategy during the crisis.

In contrast, other options like regulating international trade, controlling oil prices, or promoting renewable energy sources do not accurately capture OPEC's primary actions and objectives during the 1970s crisis, as these were not the organization's main functions at that time.