A student reads in a newspaper that the soil in his area contains high levels of arsenic. Based on this information, he believes that his fellow high school classmates have this metal present in their bodies. To test his hypothesis, he conducts an investigation of the soil in his school yard to see if it is contaminated with arsenic. He tests seven different areas around the school and finds high levels of arsenic in each. He concludes that the students at the school must have high levels of arsenic in their systems as well. Which of these is the best evaluation of his conclusion?

The best evaluation of his conclusion is it is flawed because he did not test the students to see if their bodies contained metal arsenic.

What is arsenic?

Arsenic is an element that is usually found mixed with sulfur and other metals.

Its heavy exposure can cause fatalities and its exposure for a long time can damage the liver, skin, kidney, etc.

In the experiment, he doesn't test students for correct results, so the experiment is flawed.

Thus, the correct option is D, His conclusion is flawed because he did not test the students to see if their bodies contained metal arsenic.

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