Certified Advanced Alcohol and Drug Counselor (CAADC) Practice Exam

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Which of the following is an independent variable?

The passage of time, in years
Maturity
Height
Weight

The correct answer is: The passage of time, in years

The passage of time, in years, is an independent variable because it is a factor that can be manipulated or measured without being influenced by other variables in a study. Independent variables often serve as the cause or input in an experiment or study, and they help establish a framework for examining the effect on dependent variables. In this context, the passage of time can significantly affect various aspects such as maturity, height, and weight, allowing researchers to observe or measure how these dependent variables change over time. Maturity, height, and weight, on the other hand, can often be influenced by various factors, including age and environmental conditions, making them dependent variables in most research scenarios. This reinforces the idea that time serves as a foundational element from which other measurements can be understood and analyzed.