Read these sentences from paragraph 4 of the speech to answer the question that follows.
[W]e have vowed that we shall not see it governed by
a hostile flag of conquest, but by a banner of freedom
and peace. We have vowed that we shall not see
space filled with weapons of mass destruction, but
with instruments of knowledge and understanding.
How do Kennedy's two sets of opposing ideas
contribute to his purpose in these sentences?
O A. by contrasting his motivations with those of
other explorers
O B. by weighing the benefits of space exploration
against its dangers
OC by emphasizing the potential dangers of failing
to be first in space
OD by creating a warning tone about the dangers
of space exploration