Answer: The independent variable is the specific experimental condition applied to a subject.
Step-by-step explanation:
In scientific research, a researcher primarily studies the impact of an independent variable on a dependent variable. An independent variable is the condition or state of an object/subject which is not changed while changing other variables in an experiment. Dependent variables can be physical changes such as changes in temperature, changes in volume, etc. Independent variable is the one that is the cause of change in the dependent variable.