Controlled variables ensure a stable experimental environment, isolating the independent variable's impact. This precision is crucial for accurate conclusions and robust scientific findings. Here option C is correct.
Controlled variables, also known as constant variables, are essential components of a scientific experiment, ensuring that only the manipulated variable influences the observed outcome. These variables remain consistent throughout the experimental process, serving as a baseline for comparison.
By keeping controlled variables unchanged, researchers can isolate the impact of the independent variable, the one deliberately altered to observe its effects on the dependent variable. For instance, in a study on plant growth, factors such as temperature, light intensity, and soil composition may be held constant.
This stability in controlled variables enhances the experiment's reliability, allowing researchers to attribute any observed changes to the manipulated variable rather than external factors.
Precise control over these elements is vital for drawing accurate conclusions and establishing causal relationships between variables, contributing to the robustness and validity of scientific findings. Here option C is correct.
Complete question:
Which of the following best describes the concept of keeping certain variables constant or unchanged during an experiment?
A) Independent variables
B) Dependent variables
C) Control variables
D) Experimental variables