Abel Is Conducting a Study Examining the Prevalence of Skin

Multiple Choice

Abel is conducting a study examining the prevalence of skin cancer and decides to sample residents in Hollywood, California who frequent the "Tan a Day" tanning salon. Abel randomly selects participants from this sample, but Abel's study likely suffers from:

A) lack of reliability.
B) hypothesis-guessing.
C) sample bias.
D) lack of power.