Read the information published on a .com website.The human body needs vitamins to stay healthy. People often do not get enough vitamins in their diet, so they need to take vitamin supplements. Our vitamin supplements are the best supplements on the market. If you want to stay healthy, you should buy MegaPlus vitamins.
Answer
A
The source is credible because it is true that humans need vitamins.
B
The source is credible because the author cares about people’s health.
C
The source is not credible because its purpose is to sell a product.
D
The source is not credible because it is published on a website.
Explanation
The passage is advertising MegaPlus vitamins and urges readers to buy them, so its purpose is to sell a product. That makes the source less reliable as an objective source about whether people need supplements or whether this brand is best. The fact that people need vitamins does not prove the product claims are trustworthy, and being on a website alone does not make a source unreliable.
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