Jeremy decides to cook some pasta noodles. He notices that the directions say to add salt to the water before bringing the water to a boil. The next day, Jeremy asks his science teacher, Ms. Jackson, a question: “How
does adding salt affect the boiling temperature of water?” Of course, Ms. Jackson asks Jeremy to plan and
conduct an experiment to find the answer.
The following question is based on the experiment Jeremy does to find an answer.

Which of the following was the control variable for Jeremy’s experiment?
(1 point)
One quart of boiling water with salt added
One quart of boiling water with no salt added
One quart of room temperature water with salt added
One quart of room temperature water with no salt a