Answer:
The correct answer is - True.
Explanation:
In an experiment, the confounding variable is an external factor that influences the outcomes of the experiment by effecting independent and dependent variables. It normally affects the result of the experimental design.
These variables can cause the failure of an experiment and can give false results. So, knowing the effect of any confounding variable on one or both dependent or independent variables is essential to the outcome of an experiment.
Thus, the correct answer is option - true.