Dr. Penny Dollar is a health psychologist interested in getting more people to wash their hands after using the restroom. She places a stack of attractive terry cloth towels in one

men’s room and a roll of brown, thin paper sheets in another men’s room in the same building.Her assistants count the number of men who wash their hands in each men’s room. What is the dependent variable in Dr. Dollar’s study?
a) type of towel (terry cloth or paper)b) size of rest room
c) whether subjects wash their hands or not
d) gender of subjects

The dependent variable in Dr. Dollar's study is "whether subjects wash their hands or not." This is the variable that is being measured or observed to determine the effect of the different types of towels on handwashing behavior. The dependent variable is the outcome or response variable that is expected to change as a result of the independent variable, which in this study would be the type of towel (terry cloth or paper).