Which level in the hierarchy shown is a community? 
Definitions:
Hypothesis-Testing Approach
A method in research that involves making predictions, formulating a hypothesis, and then empirically testing it.
Nonmanipulated Independent Variable
A variable in a research study that occurs naturally without any intervention or control by the researcher.
Subject Variable
A variable that represents characteristics or conditions that vary within the subjects of a study, such as age, gender, or test scores.
Formal Prediction
The process of making forecasts or predictions based on systematic, often quantitative, analysis rather than intuition or informal judgment.
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