Stuart designed and built a water filter in class. he wants to know if it will make water from lakes or streams safe to drink. which of the following would it be best for stuart to measure in an experiment in order to test his design and answer this question? a. the maximum force that can be applied to his filter without breaking it b. the amount of time required for different volumes of water to pass through his filter c. the diameter of the largest grain of dust, dirt, or sand that can pass through his filter d. the amount of bacteria and impurities in water both before and after it passes through his filter