Which claim does President Kennedy make in "President John F. Kennedy's Speech at Rice University"? A:The United States must lead the space race to prevent future wars.

B:History proves that nations that work together accomplish more than nations that work alone.

C:Space is the only place left that is free from prejudice, greed, and human suffering

D:Exploring new territory was far simpler in the past than it is in the present.

Please help