Name two ways the u. s. and soviet union worked to ease tensions between them​

allowed Kennedy and Khrushchev to talk whenever a crisis rose, and agreeing to a Limited Test Ban Treaty, which barred nuclear testing in the atmosphere.

Explanation:

In 1963, when Kennedy was President of the US, trying to end the Cold War, when the US and the Soviet Union reached an arms control agreement. They also established a direct telephone line between the White House and the Kremlin.

the answer is   b. coronado.