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 _____
a) multivitamins can't relieve pain.
b) Gloria's mother made this up.
c) the placebo effect causes brain changes.
d) multivitamins increase the availability of endorphins.
Answer: c
Psychology
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