If the Advantage of Creating Specific Conditions in the Lab

Multiple Choice

If the advantage of creating specific conditions in the lab is that potential influences of extraneous factors can be reduced, what is the drawback of doing that?

A) It is more expensive than doing field work.
B) Conditions in the field are radically different.
C) It makes the findings more justified because of the controls put in place in the lab.
D) It makes the findings less generalizable because fewer controls are in place in the field.