The group of individuals who were given a placebo are the sample for this experiment.
An experiment is a term that refers to a procedure that aims to validate a hypothesis through the cause-and-effect methodology and the demonstration of the result.
A sample is a set of elements from a larger set for which information about a variable is desired. In this case the individuals who took the placebo are the sample because a conclusion is expected from this group.
Learn more about experiments in: https://brainly.com/question/9199868
