What is the dependent, independent and controlled variables of this experiment?
Hi, I'm working on a science project and I've come across a problem. First of all, my project is about aromatherapy. The research question is, "Do different aroma therapeutic scents affect your mood? I'll be using my family members as the experimental group, as well as some friends. And the scents will vary from frankincense, orange oil, etc. Could you please identify the dependent, independent, and controlled variable(s) of this project? Thank you so much.

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