Tammy is conducting her experiment using different instructions for the two groups being compared. But she keeps the material to be learned, the location of the experiment, and the temperature all the same. Tammy is using the control technique of Group of answer choices elimination counterbalancing including constants randomization

including constants

Explanation:

A scientific constant is an experimental variable that remains unchanged throughout the experiment. The reason for this is to properly identify the relationship between the dependent and independent variables in the experiment. Knowing that external factors such as temperature and the location of a place can affect an experiment if changed, they are kept constant so that whatever final results are achieved at the end are true and accurate.

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