Which describes the role of stimulants?

What is the best way to use the clean water act to address the issue of dirty water and diseases that plague asmall community? a) to report the number of cases of people who havecholera symptomsb) to provide health guidelines about effects from waterborne diseases c) to enforce standards that focus on chemical dischargeinto bodies of waterd) to carry out research that investigates how dirty wateraffects human health

First to answer will be the brainliest i need the answer asap

According to the dietary guidelines, you should increase your consumption of calcium, fiber, potassium, and vitamin d. these nutrients are mainly found in: a. fruits b. whole grains c. vegetables d. all of the above