Gloria says that it relieves the pain in her broken finger when she takes a multivitamin. her mother taught her this trick. jeff says it's all in her head. he is correct because

The correct answer is the placebo effect causes brain changes.

Explanation:  Placebo effect is the measurable or observable effect on a person or group who has been given a placebo treatment. Many believe that the placebo effect is psychological, due to a real effect caused by belief or subjective illusion.

6.3%

explanation:

the acceptance rate for yale university is 6.3%. this means that only 6 percent of people who apply actually get accepted!