Final answer:
The independent variable in a scientific experiment is also called the b) input or the c) cause. It is the variable that is manipulated by the researcher to see how it affects the dependent variable or the outcome.
Step-by-step explanation:
The independent variable in a scientific experiment is also called the input or the cause. It is the variable that is manipulated by the researcher to see how it affects the dependent variable or the outcome.
For example, in an experiment testing the effect of fertilizer on plant growth, the amount of fertilizer would be the independent variable.