The arms race was the result of: the U. S. using nuclear weapons to end World War II
nuclear war in Israel.
the Soviets detonating an atomic bomb.
o Germany rebuilding its military following World War II.

The U.S using nuclear weapons to end World War II.

Explanation:

The arms race went hand in hand with the Cold War, which took place 20 or so years after World War II. It was a tense situation and resulted in the U.S. and Russia stockpiling nuclear weapons as a means of protection. When America used two atomic bombs on Japan, the devastation it caused led other countries to be concerned if they were going to be next.

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering