Question

the apollo - soyuz test project was an example of
the race for supremacy in space.
cooperation in the development of space technology.
the cold war at its height.
fading interest in space exploration.

Explanation:

The Apollo-Soyuz Test Project was a joint mission between the U.S. (NASA) and the Soviet Union (Soviet space program) in 1975, designed to test rendezvous and docking procedures between their spacecraft, marking a collaborative effort in space technology during the later Cold War period. The other options are incorrect: it was not a race for supremacy, the Cold War was de-escalating at this point, and interest in space exploration did not fade with this mission.

Answer:

cooperation in the development of space technology.