In order to collect relevant primary data, Ms. Thornton wishes to conduct a survey of her current customers. To save time and money, she wishes to conduct the survey via a Web-based form that saves responses to a database. In this situation, what is the most significant problem with using this method of administering the survey rather than a traditional mail approach?

• A. Respondent bias: respondents may notanswer the survey truthfully, hence datamay be inaccurate.
• B. Nonprobability sampling: customers whodo not use the Internet will not be in thesample, hence correct inferences may not bepossible.
• C. Survey length: respondents will not be ableto see the entire survey and thus mayanswer only part of it, hence data will beincomplete.
• D. Question complexity: Web-based surveyscannot prevent multiple or inappropriateresponses to complex questions, hencesome data may be corrupted.