No matter what kind of toothpaste you use, regular brushing will reduce your chance of tooth decay. Scientists have concluded that when brushing your teeth, you can reduce the possibility of tooth decay by removing the plaque flakes formed on your teeth and gums. You don't need fluoride toothpaste, just brush your teeth carefully and you can say goodbye to tooth decay. Which of the following is a criticism of the reasoning discussed above? ['Brushing with fluoride toothpaste reduces the chance of tooth decay.', 'The fact that brushing your teeth reduces the chance of tooth decay does not indicate that fluorine has no effect.', 'Few people can fully remove plaque by brushing their teeth.', "Plaque on people's teeth for most of the time."]