If It Is Impossible to Conduct Experimental Research on a Topic,what

Multiple Choice

If it is impossible to conduct experimental research on a topic,what do good researchers usually try to do to reduce confounds in correlational research?

A) search the research literature for independent replications of their findings
B) measure and statistically control for likely confounds
C) use statistics that can uncover time sequences in cross-sectional data
D) choose dependent measures that are not prone to confounds