Mock Test Analyzing Arguments Logic and Reasoning Problems Set C

Here’s one more set of questions based on short paragraphs that make a specific argument. You will sometimes have to use inference—reading between the lines—to see which statement is best supported by the passage.
Close-up images of Mars by the Mariner 9 probe indicated networks of valleys that looked like the stream beds on Earth. These images also implied that Mars once had an atmosphere that was thick enough to trap the sun’s heat. If this were true, something happened to Mars billions of years ago that stripped away the planet’s atmosphere.
This paragraph best supports the statement that