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Chapter 2: Problem 25

College student: Whenever I need to study but feel sleepy, all I do is take a few of those caffeine pills, and I'm completely awake. According to the label, these pills are perfectly safe to use, since I could get the same amount of energizing caffeine by drinking a few cups of coffee. Which of the following statements weakens the argument expressed by the student? A. Pills that can help prevent drowsiness often contain caffeine, a natural substance that can increase "awakenesss" and provide the user with a sudden boost of energy. B. Since caffeine is a natural substance found in many common foods such as chocolate, pills that are caffeinebased may be just as safe. C. One subconsciously limits intake of caffeine through its method of intake; for example, most people can drink only a few cups of coffee before they feel full. D. Many students tend to pull "all nighters" in school, and caffeine pills are an ideal way to reduce drowsiness and study through the night. E. In the last decade, many pharmaceutical companies have released caffeine- based pills that have been widely sold over the counter in drugstores.

Short Answer

Expert verified
The statement that weakens the argument expressed by the student is 'C. One subconsciously limits intake of caffeine through its method of intake; for example, most people can drink only a few cups of coffee before they feel full.'

Step by step solution

01

Understand the Argument

The student argues that caffeine pills are safe to take as they are equivalent to the amount of caffeine in a few cups of coffee.
02

Analyze Given Options

Consider each option and see which one contradicts the student's assumption about the safety of caffeine intake via pills being the same as that via coffee.
03

Identify the Correct Option

The choice which contradicts the student's argument is 'C. One subconsciously limits intake of caffeine through its method of intake; for example, most people can drink only a few cups of coffee before they feel full.' This option states that the intake method affects the intake limit, hence indirectly affecting the safety of the substance.

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