1. Researcher: "In our study, participants who ate chocolate daily reported feeling happier than those who didn't. Therefore, eating chocolate makes people happy." What is the main flaw in this reasoning?

2. Either we increase military spending, or we leave our country vulnerable to attack. We can't leave our country vulnerable, so we must increase military spending. This argument is an example of:

3. Either we build this new highway, or our city's traffic problems will continue to worsen. We can't let traffic get worse, so we must build the highway. This argument presents:

4. Expert scientists agree that climate change is a serious threat. Therefore, climate change must be a serious threat. What type of reasoning is this?

5. The senator argues for stricter gun control laws, but he has armed bodyguards. Therefore, his argument is invalid. This is an example of:

6. If it's raining, then the ground is wet. The ground is wet. Therefore, it must be raining. This argument is:

7. Violent video games have become more popular in recent years. During this same period, youth violence has decreased. Therefore, violent video games reduce youth violence. What type of fallacy does this argument commit?

8. If you get a college degree, you'll get a good job. You got a good job. Therefore, you must have a college degree. This argument commits which fallacy?

9. A study found that people who drink coffee regularly have a lower risk of heart disease. Therefore, drinking coffee prevents heart disease. Which of the following best describes the flaw in this argument?

10. If we don't increase military spending, our enemies will see us as weak. If our enemies see us as weak, they'll attack us. Therefore, we must increase military spending to prevent an attack. This argument is an example of: