Which statement best describes an argument made in "President John F. Kennedy's Speech at Rice University"?

A The city of Houston has the most to gain by investing in the United States' exploration of space.

B The United States has made important discoveries on the moon and is far ahead of other countries in space exploration.

C Space exploration is important, but the country should proceed slowly and with caution toward its goal of reaching the moon.

d The United States has been a world leader in many ways and should be a leader in space exploration, too.