When Khrushchev demanded rhat us troops leave West Berlin Kennedy responded by

Calling up additional troops

Building the Berlin Wall

Withdrawing troops from the city

Launching the bay of pigs invasion

A. calling up additional troops.

On November 10, 1958, Soviet Premier Nikita Khrushchev delivered a speech in which he demanded that the Western powers of the United States, Great Britain and France pull their forces out of West Berlin within six months. This ultimatum sparked a three year crisis over the future of the city of Berlin that culminated in 1961 with the building of the Berlin Wall.

A - Calling up additional troops