Rapunzel would like to strengthen her hair to escape the tower. she hears roumors that pantene shampoo strengthens hair. she decides to start using this shampoo everyday. Identify which of the following is most probably be her control group? A. the water normally used to wash her hair

B. the pantene shampoo used to wash her hair

C. the hair dye that she adds to her hair

D. the conditioner she added to her hair