Question

What variable should be changed for an experiment to test which brand of bread stays fresh the longest?

the day the bread is bought
the length of time that the bread sits
the brand of bread that is used
the place the bread is left to sit

Answer 1

The length of time the bread sits

Answer 2

The length of time that the bread sits.

Step-by-step explanation:

This would make the most sense here because we are dealing with different brands of bread, and we want to find out which stays fresh longer. Thus, option B would make more sense, here.