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

For too long, school cafeterias, in an effort to provide food they thought would be appetizing to young people, mimicked…

Which of the following, if true, would strengthen the speaker's argument?

During colonial times in America, juries were encouraged to ask questions of the parties in the courtroom. The jurors we…

What is the point at issue between Quinn and Dakota?

Which of the following is similar to the argument made by the speaker?

By the time they reach adulthood, most people can perform many different activities involving motor skills. Motor skills…

Which of the following, if true, would weaken the speaker's argument?

Forest fires feed on decades-long accumulations of debris and leap from the tops of young trees into the branches of ma…