With a bit of googling, I found that Sam Houston was the one to refuse.
Only some natural elements reflect light. Most do not, but to some that do are diamonds.
Have a nice day! :)
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.
