With respect to data collection,which is true?

A) Compared with in-person survey respondents, Web survey respondents tend to yield higher-quality data.
B) A question such as, "Do you believe the death penalty should be legal," generally should be located near the end of a survey.
C) Collecting demographic information is not useful.
D) The more demographic information collected, the higher the quality of data attained.

Placing potentially controversial or sensitive questions near the end of a survey can reduce the likelihood of respondents quitting before completing the survey or providing biased responses due to discomfort. Options A, C, and D are all incorrect as they contradict commonly accepted principles of data collection. Web surveys may suffer from self-selection bias, demographic information is essential for understanding respondents' characteristics and associations with survey responses, and collecting excessive demographic information can reduce response rates and increase respondent burden.