Question

the passage below describes an experiment. lemon juice can cause milk to curdle, or form solid clumps. olivia mixed two cups of milk and four teaspoons of lemon juice in each of three pots. she used nonfat milk in one pot, low - fat milk in one pot, and full - fat milk in the third pot. olivia put lids on the pots and left the mixtures to curdle on the stove over medium heat. after 20 minutes, she removed a small sample of curdled milk clumps from each pot and calculated the average clump size in each sample. olivia repeated this process four times. identify the question that the experiment can best answer. does nonfat milk curdle faster than low - fat or full - fat milk when lemon juice is added? does the type of milk affect the size of clumps formed when the milk curdles? does stirring a mixture of lemon juice and milk affect the size of the curdled milk clumps?

Explanation:

Olivia uses different - fat - content milks (nonfat, low - fat, full - fat), adds the same amount of lemon juice, and calculates the average clump size. The variable being tested is the type of milk, and the outcome being measured is the size of the curdled milk clumps.

Answer:

Does the type of milk affect the size of clumps formed when the milk curdles?