A high school principal wants to determine student opinions on a new school-wide policy regarding cell phone usage during class. The principal surveys 100 students who are members of the school's debate club. The survey results indicate that the majority of these students are in favor of the new policy. Which of the following is true about the principal's survey?
It accurately reflects the opinions of all students in the high school.
The sample size should have been larger to be more representative.
The survey sample is biased because it is not representative of all students.
The survey should have included only students who do not participate in extracurricular activities.
