Answer:
The right answer is D. Détente focused on easing tensions between the United States and the Soviet Union, while containment often heightened
tensions between the two countries.
Step-by-step explanation:
Détente in the 1960s and 1970s produced more trade and cooperation between the United States and the Soviet Union. It also led to a reduction in the number of nuclear weapons agreed upon and made official in treaties (SALT I and SALT II). This contibuted to a better climate in international relations without eliminating the fundamental contradiction of the Cold War: the contest over global predominance between the two superpowers. Containment as the US key doctrine continued, though both sides fought proxy wars, mainly in the developing world.