Can someone please help me? I think it might be (D) but I'm not sure...And I need the answer as soon as possible!
Which best explains why a washing machine represents an open system?
(A) It has multiple cycles, such as wash or spin
(B) Most washers can use a variety of laundry detergent brands
(C) The amount of wash in a load varies
(D) Water and Power come from external sources