Q: Answer the question

A disorder is associated with certain flaws in the human respiratory system. Which is most likely a typical symptom of this disorder?

A: difficulty breathing


Q: Answer the question

Water is often put through a treatment system before it is used in homes as drinking water. Which is the most likely reason water is treated before people drink it?

A: to remove harmful substances


Q: Answer the question

The following statements are from an article in a fitness magazine. Which of these is an opinion?

A:
People should exercise because it makes them feel better.