Ethical Principles Developed by the American Psychological Association and the British

Ethical principles developed by the American Psychological Association and the British Psychological Society urge psychological investigators to

A) forewarn potential research participants of the exact hypotheses that the research will test.
B) avoid the use of laboratory experiments when the behaviors of interest can be directly observed in natural settings.
C) ensure that research participants give informed consent before participating in the research.
D) avoid the use of monetary incentives in recruiting people to participate in research.