Which of the Following Statements Is True About Carrying Out

Multiple Choice

Which of the following statements is true about carrying out experiments and quasi-experiments in social agencies?​

A) ​The intervention being tested is almost always implemented in the intended fashion.
B) ​The control condition almost never is contaminated by interaction between clients in the experimental and control groups.
C) ​Practitioners might violate the research protocol for case assignment to make sure that clients receive the intervention being evaluated.
D) ​Outside agencies can be relied upon to refer enough clients to ensure obtaining a sufficient sample size.