Depending on what water source you use, if your using faucet water your food will be clean but not totally.
If your using a lake, ocean, bodies of water your food will not be as clean, water from bodies of water are full of bacteria, and other contaminants.That being said, using a faucet is your best bet or even try to clarify water from bodies can help.
T-test is a principally a test of agility
In T-test you participant is required to run across 4 points that formed a huge Letter T, at which his time will be measured between set points
I would say C
hope this helps:))
