2) Which best states the main idea of this passage? A)
American astronauts have only spent 16 days on the
lunar surface at six different landing sites.
NASA is building the Gateway, a lunar orbiting
B) platform that will host astronauts farther from Earth
than ever before.
By the late 2020s, a lunar lander capable of
C) transporting crews and cargo will begin trips to the
surface of the Moon.
By first making travel to the moon's surface common,
D) NASA hopes to use the moon as a base for further
space exploration, including to Mars.