Ronald Reagan Group of answer choices was the U. S. President who took on Khrushchev during the Cuban Missile Crisis. was the U. S. President who ended the Iran Hostage Crisis and the Cold War. was the U. S. President who ordered the atomic attack of Hiroshima and Nagasaki. All of the above.

The answer is B. Ronald Reagan was the U.S. President who ended the Iran Hostage Crisis and the Cold War.

Explanation:

The U.S. President who took on Khrushchev during the Cuban Missile Crisis was John F. Kennedy.

The U.S. President who ordered the atomic attack of Hiroshima and Nagasaki was Harry S. Truman.