With Regard to the Topic of Deception in Research with Human

Multiple Choice

With regard to the topic of deception in research with human subjects, which of the following is MOST accurate? ​

A) Researchers are careful to avoid deceiving subjects.
B) Some topics could not be investigated unless deception was used. ​
C) It has been empirically demonstrated that deception causes severe distress. ​
D) All psychological research must involve some deception. ​