Part A What is a central idea of "We're Going to Mars!"?

Conditions on Mars are changing to become more suitable to support life.

Studying Mars will help scientists learn more about Earth.

Life on Mars will be uncomfortable because Mars is too cold for humans.

Studying Mars should take priority over other scientific studies.
Question 2
Part B

Which detail best supports the answer to Part A?

“Also, studying sediments, rocks, and soils, as well as volcanoes and meteoroid impact sites, can help scientists study details of Earth’s evolution.”

“However, evidence suggests that life may have existed in bacterial form billions of years ago.”

“If SpaceX, a private company dedicated to space travel and exploration, has any say in it, humans will reach Mars as early as 2022.”

“It would be an important moment in the history of humanity, ranking up there with the discovery of ‘The New World’ and the moon landing.”