An experimental microwave clothes dryer heats neither air nor cloth. Rather, it heats water on clothes, thereby saving electricity and protecting delicate fibers by operating at a lower temperature. Microwaves are waves that usually heat metal objects, but developers of a microwave dryer are perfecting a process that will prevent thin metal objects such as hairpins from heating up and burning clothes.
Which of the following, if true, most strongly indicates that the process, when perfected, will be insufficient to make the dryer readily marketable?

Question

Examsnet · Accepted Answer

Correct Answer is :  Many clothes that are frequently machine-dried by prospective customers incorporate thick metal parts such as decorative brass studs or buttons.

GMAT Verbal Reasoning Practice Test 6