To verify a fact, check multiple sites including all but which of the following?

Name: To verify a fact, check multiple sites including all but which of the following?
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Question

Quizplus · Accepted Answer

Checking multiple sources is important to verify a fact, and scholar.google.com and wolframalpha.com are both reputable sources of information. Therefore, choice C - all of the above - is the best choice. Choice D - none of the above - is incorrect, as checking no sources would not ensure the accuracy of the fact.

To Verify a Fact, Check Multiple Sites Including All but Which