DrGarcia Really Likes Twinkies

Multiple Choice

Dr.Garcia really likes Twinkies.Her students often see her eating them for breakfast,lunch,and snack.Dr.Garcia gives her students a survey to determine whether they prefer Twinkies or Ho Hos.Although most students prefer Ho Hos,most report liking Twinkies better.The students' responses demonstrate a/an

A) placebo effect.
B) social desirability bias.
C) independent variable.
D) junk food effect.