Which detail from the text best supports the answer to Part A?
O A "More recently, consensus moved toward the idea that yawning cools
downlige brain, so when ambient conditions and temperature of the
brain itself increase, yawning episodes increase." ( Paragraph 4)
OB "When you see someone else yawn, the networks in your brain
responsible for empathy and social skills are activated."
(Paragraph 9)
OC "In 2013, cognitive and behavioral scientists at the University of Tokyo
once again tested contagious yawning in canines while controlling for
stress." ( Paragraph 11)
OD "Levels of the cortisol stress hormone did not rise in dogs that didn't
yawn in response to a human yawn. This finding suggests some dogs
find human yawning stressful and others do not." ( Paragraph 12)
