Which of the Following Actions Represents the Use of Secondary

question 20

Multiple Choice

Which of the following actions represents the use of secondary prevention to reduce environmental health risks?

• A) Collecting blood specimens from preschool children to check for lead levels
• B) Meeting with local government officials to request that the city clean up a hazardous vacant lot
• C) Referring a child with toxic lead levels to a neurologist
• D) Teaching parents of a 2-year-old about the dangers of lead-based paint in older homes

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Definitions:

Field Experiments

Research studies conducted in natural settings outside the laboratory to assess the effect of manipulated variables in a real-world environment.

Direct Control

The management or regulation of variables in an experiment to ensure that any observed effects are due to the manipulation of the independent variable.

Extraneous Variables

Variables that are not the focus of a study but could influence the results, potentially leading to confounding effects if not controlled.

Randomization

The process of randomly assigning subjects to different groups in a study, minimizing biases and ensuring variability.