Dr. Rodgers is interested in people's attitudes toward gun control and how these attitudes are related to people's political affiliations. She posts an invitation to participate in an anonymous internet survey to eight different social media sitesthree that tend to contain politically conservative content, three that tend to contain politically liberal content, and two that are neutral, containing both politically conservative and politically liberal content. As part of the survey, she carefully collects demographic data on age, gender, and self-identified political affiliation on a scale from 1 = extremely liberal to 7 = extremely conservative. Participants may also select 0 = no political leanings. After completing the 16-item attitude survey, participants are thanked and prompted to email the survey link to two or three people they know might be interested in taking the survey. A. Does Dr. Rodgers use a probability or non-probability sampling method? Explain. B. List two advantages to collecting data from an internet survey. [NOTE: There is no direct answer to this in the learning materials. It requires you to reason it out from what you know.

C. What are the potential problems that could arise in the study based on the sampling method she used? Identify two and explain.