Which of the following is one of the issues addressed by the ethics guidelines developed by the American Psychological Association?

A) debriefing
B) sampling
C) introspection
D) validity

Debriefing is one of the major issues addressed in the ethics guidelines developed by the American Psychological Association, which outlines the importance of informing research participants about the purpose and procedures of the study, allowing them to ask questions, and dealing with any negative consequences of participating in the study. Sampling, introspection, and validity are also important issues in psychology research, but they are not specifically addressed in the APA ethics guidelines.