David is a doctor with the local hospital. Yesterday, he was seeing two patients, patient A and patient B. His tests found out that patient A had myopia, but patient B had normal eyesight. He referred the patient with eye condition to an ophthalmologist. Who would find it easier to see the whiteboard in school, patient A or patient B?
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Answer: patient B

Two groups of patients were under observation for heart disease. The Red group was composed of people with low cholesterol, while the Yellow group was comprised of people with very high cholesterol. Which group had fewer people with atherosclerosis in it?
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Answer: Red

Jackie and Mark are two friends who are spending a day at the beach. Jackie wants to go out on the boat to spend some time on the ocean, but Mark wants to lay out on the beach and relax. Since they can't agree, Jackie goes out on the boat alone while Mark stays behind on the beach. Is the air around Mark more or less dense than the air around Jackie?
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Answer:
less