Answer:
D. IV x PV factorial
Explanation:
The IV x PV factorial is a tyoe of factorial design which tend to include both an experimental independent variable (IV) and a nonexperimental participant variable (PV).
In the case sited the researcher used both IV and PV to get his result.
The answer for your question would be C.
Because GB would stop American ships and take American sailors.
It would be D) carbon dioxide (I took the test haha).
