They help your body produce vitamin D. They are visible to the naked eye. They provide the energy that makes your morning toast. They carry information to televisions and radios.
A is true of UV rays. B is true not of UV rays but rather of visible light. C is true not of UV rays but rather of microwaves. (unless you actually toast your toast in a toaster like a normal person) D is true not of UV rays but rather of radio waves.
