Alex, a First-Year Student at University, Wants to Know How

Multiple Choice

Alex, a first-year student at university, wants to know how many of her dorm mates have tried marijuana, so she decides to survey everyone on her floor. Despite rumours to the contrary, the results suggest that fewer than 10 per cent of her classmates have tried the drug. What is the most likely explanation for her findings?

A) People often distort their answers or fail to tell the complete truth when surveyed.
B) Her dorm mates did not understand the question.
C) Alex did not calculate the findings correctly.
D) Surveys are not an acceptable means to gather new information.