What is the main idea of this selection?
A) Humans and Martians have similar intelligence and lifespans.
B) Mars has all that is necessary for the support of human existence.
C) Humans are unaware of Martian plans to wage warfare on Earth.
D) Mars is significantly ill-equipped to support human life.
What is the main idea of this selection?
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The correct answer is D) Mars is significantly ill-equipped to support human life.
This option suggests that the selection emphasizes the challenges and limitations of Mars in sustaining human life, implying that it lacks the necessary conditions such as sufficient atmosphere, water, and resources for humans to survive. If you need more detailed help or another question answered, feel free to ask!