Before Beginning a Study on the Health Effects of Obesity,a

question 110

Multiple Choice

Before beginning a study on the health effects of obesity,a group of researchers agree that,for the purposes of their research,anyone with a Body Mass Index greater than 30 kg/m² will be considered obese.This is an example of _______________.

• A)a confounding variable
• B)an operational definition
• C)convenience sampling
• D)an appeal to common sense

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Definitions:

Serous Membrane

An epithelial membrane that lines a body cavity that does not open to the outside of the body.

Pleural Membranes

Thin layers of tissue that envelop the lungs and line the interior of the chest cavity, facilitating lung movement during breathing.

Pericardium

A membrane surrounding the heart and consisting of an outer fibrous layer and an inner double layer of serous membrane.

Cartilage

A flexible, connective tissue found in various forms throughout the body, including joints, ear, and nose.