Amy Conducts an Experiment in Which She Discovers That Brunettes

Amy conducts an experiment in which she discovers that brunettes have more fun. She has three brunette females and three blond females go to the same party and record how many times they were asked to dance. In her experiment, Amy has defined the dependent variable as the number of times they were asked to dance, and the as hair
Colour.

A) correlational variable
B) independent variable
C) extraneous variable
D) confounding variable