Why Would a Researcher Object to Using Pairwise Deletion to Account

Multiple Choice

Why would a researcher object to using pairwise deletion to account for missing data?

A) It does not offer a perfect prediction of missing values.
B) The sample size can change based on what is being analyzed.
C) It deletes respondents who do not provide adequate responses.
D) It deletes groups or clusters of respondents who do not provide adequate responses.