Answer is C. Internet is a vast field, full of information and knowledge, which are very helpful for studies and research. Some come from <em>safe sources</em> and other might need some <em>precautions</em>. When we read something that <em>seems</em> to be interesting or even truthful, but the people that wrote it don't identify themselves, it can indicate that some information is being hidden on purpose. Also, being anonymous, make people with no <em>accountability</em>.
The Revenue Act of 1926, which was signed by President Coolidge, mainly had an effect on upper-class Americans, because it eliminated many inheritance and "gift" taxes.
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