In this experimental case, coffee is the: <u>independent variable</u>.
<h3>The types of variables.</h3>
In an experiment, there are two (2) main types of variables and these include the following:
- Dependent variable.
- Independent variable.
<h3>What is an independent variable?</h3>
An independent variable can be defined as the variable that is being manipulated by an experimenter or researcher. This ultimately implies that, it is typically considered to be the cause in an experiment and it stands alone because it cannot be changed by any variable being observed or measured.
Based on the information provided about this experiment, we can reasonably infer and logically deduce that the <u>independent variable</u> is coffee while the dependent variable is memory.
Read more on independent variable here: brainly.com/question/82796
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