Answer:
The correct answer is A. As a response to the normalization of relations between China and the United States, Brezhnev invited Nixon to visit Moscow.
Step-by-step explanation:
When Nixon visited China in 1972, the Soviet Union saw this as a threat, since China was a direct rival in the socialist sphere, and a good relationship with the United States directly would pose a latent threat that could translate into an anti-Soviet coalition between the two. nations. For this reason, as a way of counteracting this relationship, Leonid Brezhnev, Soviet premier, invited President Nixon in May of the same year to visit Moscow, where among other things the SALT I treaty was signed.