A College Student Who Has Been Feeling Fatigued Decides to Take

A college student who has been feeling fatigued decides to take an energy-boosting supplement advertised on a television infomercial and endorsed by a professional athlete. She reports being more energetic after taking the supplement but later discovers that the supplement is only made of sugar. The student most likely experienced _____.

A) the effectiveness of the energy supplement working on her body
B) the placebo effect
C) an increase in nerve impulse velocity caused by the sugar tablet
D) an increase in blood pressure
E) a decrease in blood pressure