Final answer:
The author proposes Mars as the ideal planet for human colonization due to its similarities to Earth, including its day-night cycle, thin atmosphere, and presence of frozen water in the polar ice caps.
Step-by-step explanation:
The author of the article "Martian Metropolis" proposes that humans colonize Mars rather than another planet due to several reasons. Firstly, Mars is currently the most viable option for colonization within our solar system because it has a similar day-night cycle and a thin atmosphere that can potentially be transformed. Additionally, Mars has abundant frozen water in the polar ice caps, which is crucial for sustaining human life. Lastly, Mars possesses topographical features that suggest the possibility of hosting habitats and supporting agriculture.
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