Final answer:
When introducing the independent variable (IV), it is important to establish a clear and consistent baseline. Starting with a consistent baseline allows researchers to accurately compare the effects of the IV on the dependent variable (DV) and draw valid conclusions from their experiment.
Step-by-step explanation:
The question is asking about the best baseline to introduce the independent variable (IV).
In English, a baseline refers to the starting point or foundation of something. When introducing the IV, it is important to establish a clear and consistent baseline so that any changes or effects can be accurately measured. For example, if conducting an experiment on the growth of plants with different amounts of water, the baseline could be established by measuring the current height of each plant before the experiment begins.
By starting with a consistent baseline, researchers can accurately compare the effects of the IV on the dependent variable (DV) and draw valid conclusions from their experiment.