When and why did the space race end?(

A. The space race was over in 1967. In that year, both the U.S. and the USSR faced tragedies in their space programs.
B. The space race was over in 1965. In that year, the U.S. satellite Mariner 4 completed the first voyage to Mars and took pictures of its surface.
C. The space race was over in 1971. In that year, the American David Scott placed a plaque with a list of names of the Soviet cosmonauts and American astronauts who died in the process of space exploration.
D. The space race was over in 1975. In that year, the U.S. and the USSR collaborated on a test flight and shook hands when the mission was completed successfully.

A. The space race was over in 1967. In that year, both the U.S. and the USSR faced tragedies in their space programs.

The space race officially ended in 1967 with the tragic deaths of three American astronauts in the Apollo 1 spacecraft fire and the death of Soviet cosmonaut Vladimir Komarov in the Soyuz 1 spacecraft crash. These events marked a turning point in space exploration as both countries realized the dangers and challenges of space travel, leading to a shift towards more collaborative efforts in space exploration rather than competition.