On a Long Transcontinental Flight, a Middle-Aged Man Gets Up

question 77

Multiple Choice

On a long transcontinental flight, a middle-aged man gets up and exercises in the aisle, moving his hands, feet, arms, and legs as much as he can. He does this every two hours. The flight attendant asks him to sit down, but he explains that he is trying to prevent a very dangerous medical condition. He is talking about the condition called

• A)leukemia.
• B)deep vein thrombosis.
• C)aplastic anemia.
• D)thrombocytopenia.

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Definitions:

Scientific Method

The procedure for the systematic pursuit of knowledge involving the observation of facts and the formulation and testing of hypotheses to obtain theories, principles, and laws.

Economists

Professionals who study and analyze economies, including their production, distribution, and consumption of goods and services.

Hypotheses

Proposed explanations made on the basis of limited evidence as a starting point for further investigation.

Hypothesis

A proposed explanation made on the basis of limited evidence as a starting point for further investigation.