Final answer:
The creation of Internet panels is making internet surveys increasingly popular because these panels consist of individuals willing to participate in surveys and have shared demographic data.
Step-by-step explanation:
Internet surveys are becoming increasingly popular, in part due to the creation of Internet panels, lists of people who have shared demographic data and expressed willingness to participate in survey research. The correct answer is b) Panels. These panels are used by companies and researchers, like Harris Interactive, to conduct surveys that reveal the attitudes, beliefs, or habits of the general public or segments of the population. When a survey is designed, an invitation is sent to the panel members to participate on topics they are interested in based on certain criteria such as the time required for the survey, the topic at hand, and any compensation offered.
Working with these Internet panels presents challenges such as ensuring responses are unique and represent a balanced demographic. Efforts are made to address the potential for multiple responses from a single person or misrepresented demographic data by devising methods like validating email addresses and social media profiles, although these methods are not flawless.