Why is D the correct answer?

I didn't understand this one... I don't understand how D is the correct answer. I guessed A here...

Billy on August 18 at 06:11AM

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Choice A spelling error

Choice A should be "is false" instead of "if false".

Shiyi on March 1 at 05:12PM

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Why is A correct?

Shiyi on March 1 at 05:07PM

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Why is D correct?

Shiyi on March 1 at 04:54PM

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Logic Reasoning

I wanted some insight on this question. I selected answer A which is the incorrect answer with t...

Bryant on August 7, 2016

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Lifestyle and heart disease

First thing I noticed: Correlation [~]btw high cholesterol and high risk of death due to heart a...

Leila on November 11, 2013

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