Question

Jennifer usually has cold hands. After running laps in gym class, her hands are very warm, and the ring she wears on her right hand fits more tightly than usual. What change in her body is most directly responsible for this change, and what purpose does it serve?

Answer 1

When you run your blood vessels expand and the blood flowing through your body gets warmer. the ring gets tighter because of the expansion in blood vessels through the body. they do this in order to let blood pump faster.

Answer 2

the answer is B.  Her blood vessels dilate to increase the amount of heat her body loses through her skin.