A chemistry professor who teaches a large lecture class surveys his students who attend his class about how he can make the class more interesting, hoping he can get more students to attend. The survey is optional and will be available online. Students will remain anonymous. Which of the following is the most relevant source of bias? a. None of these.
b. Voluntary Response Bias
c. Loaded Questions
d. Perceived Lack of Anonymity
e. Response Bias