Knowledge Check 9

This is one chore that almost everyone dreads doing, but it seems like it always has to be done. That's right, I'm talking about laundry. Laundry, which is considered an activity of daily living,  is an occupation that has withstood the test of time. At first, laundry was done in rivers and streams. Then, we moved on to washboards and soon after, washing machines. Although how we go about doing it has changed quite a bit, the overall purpose of laundry, cleaning clothes, has stayed the same.