Which of the Following Is a Viable Alternative for a Researcher

Multiple Choice

Which of the following is a viable alternative for a researcher when needing an experimental group, but you do not want to deny clients access to a needed service?

A) provide services to clients that are an alternative form of those being evaluated
B) proceed with the same intervention for the second group and forego any chance of comparing two groups
C) provide extra compensation to those who have had to wait for services
D) all of the above are viable options for the researcher
E) none of the above are viable options for the researcher