Francine was a participant in an observational study, and her behavior changed simply as a result of being watched.Technically, what had occurred?

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Francine experienced reactivity, which is when a participant's behavior changes simply as a result of being observed. This can happen in observational studies, where participants may feel pressure to act differently or believe that they are being evaluated in some way. The placebo effect (A) is when a person's condition improves simply because they think they are receiving a treatment, whereas experimental control (B) refers to the ability to manipulate and control variables in an experiment. Participation (C) simply refers to being involved in a study or experiment.

Francine Was a Participant in an Observational Study, and Her