Question

the passage below describes an experiment. katie filled three cups with water and three cups with mineral spirits, which are used to thin certain paints. all the cups contained the same volume of liquid, and all the liquids were at room temperature. she then dipped six identical paint brushes into black oil paint and placed one paint brush in each cup. three days later, she compared how much paint remained on each brush. identify the question that the experiment can best answer. does hot water remove oil paint from brushes more effectively than cold water does? do mineral spirits remove watercolor paint from brushes more effectively than water does? do mineral spirits remove oil paint from brushes more effectively than water does?

Explanation:

The experiment has two types of liquids (water and mineral spirits) and uses oil - paint covered brushes. It compares the amount of paint remaining on brushes after being in these liquids. The key variables are the type of liquid (water vs mineral spirits) and the type of paint (oil paint). So it aims to test the effectiveness of mineral spirits versus water in removing oil paint from brushes.

Answer:

Do mineral spirits remove oil paint from brushes more effectively than water does?