|Question 27Verbal

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While researching a topic, a student has taken the following notes:
• Generally, an object will heat up when twisted and cool down when untwisted.
• The twisting of an object is known as torsion.
• A 2019 study led by researchers Zunfeng Liu and Ray Baughman tested the torsional heating and cooling of various fibers.
• They wanted to know whether torsional cooling could be used as a refrigeration method.
• When ethylene propylene diene monomer (EPDM) rubber fiber was twisted, its average surface temperature increased by .
The student wants to present the study's research question. Which choice most effectively uses relevant information from the notes to accomplish this goal?
A 2019 study researched whether torsional cooling could be used as a refrigeration method.
A
When three-ply spandex rubber fiber was twisted, its average surface temperature increased by .
B
Researchers determined that when both fibers were twisted, the surface temperature of three-ply spandex rubber increased more than that of EPDM rubber.
C
Torsional heating and cooling occurs when an object changes temperature while being twisted and untwisted.
D