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

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

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

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

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