Final answer:
The amount of body spray variable in Timothy's study has three levels, and the attractiveness variable has five levels.
Step-by-step explanation:
Timothy's study on the effects of the amount of body spray on perceived attractiveness includes different levels for each variable. The variable of amount of body spray has three levels: no body spray, a small amount of body spray, and a large amount of body spray. The variable of attractiveness, being rated on a scale of 1 to 5, has five levels corresponding to each point on the rating scale.