An Advantage of Field Experimentation Is That

Multiple Choice

An advantage of field experimentation is that:

A) you can control extraneous variables more tightly than you can in a laboratory experiment.
B) you can be assured of high levels of internal validity.
C) your results may have more external validity than the results from a laboratory experiment.
D) you can control extraneous variables more tightly than you can in a laboratory experiment and you can be assured of high levels of internal validity.