Final answer:
The author's purpose in writing the passage is to entertain the reader while discussing the subject of bottled versus tap water, arguing that bottled water is not worth its high price compared to tap water. The correct answer to the question is D, as the author uses humor and critique to engage the audience.
Step-by-step explanation:
The author's primary purpose is to explore the topic of bottled versus tap water and to critique the rationale behind the preference for bottled water over tap water, which is often significantly less expensive. The passage employs a combination of persuasive and expository techniques, ultimately seeking to convince the reader that the additional cost of bottled water is not justified, especially when tap water is of comparable quality and significantly cheaper. The author uses exaggeration and hypothetical anecdotes to add humor to the argument, effectively engaging and entertaining the reader while also presenting a critique of bottled water consumption.
The answer to the student's question about the author's purpose is to entertain the reader with a discussion about buying water, corresponding with option D. This is evident through the use of humor and hyperbole, such as the exaggerated claim of tasting tap water in three million homes and finding a fish in the glass, which serves to mock the premises used by some to justify the purchase of bottled water.
While discussing this critiqued preference, the passage indirectly provides information on the costs associated with both bottled and tap water. However, given the tone and context of the passage, it is clear that the intent is less to inform in an objective manner and more aimed toward persuasion through a light-hearted and satirical commentary on the subject.