Question

the passage below describes an experiment.
rock candy is a treat made by allowing sugar crystals to form on sticks. zoe began making rock candy by adding one cup of hot water to each of eight glass jars. she dissolved equal amounts of white sugar in half of the jars and brown sugar in the other half. she hung one identical wooden stick from the top of each jar, making sure that two inches of each stick was submerged in the sugar solution. zoe left the jars in a cupboard for one week, allowing rock candy to form on the sticks. then she measured the size of the rock candy on each stick.
identify the question that the experiment can best answer.
does the amount of sugar in the sugar solution affect the size of rock candy?
does rock candy grow larger when it is made with white sugar or brown sugar?
does the type of sugar used to make rock candy affect whether the candy forms after three days?

Explanation:

Zoe's experiment involves using two types of sugar (white and brown) while keeping other variables (amount of sugar, water, stick, time in cupboard) constant. The outcome measured is the size of rock candy. So, the question should be about comparing white and brown sugar in terms of rock - candy size.

Answer:

Does rock candy grow larger when it is made with white sugar or brown sugar?