The scientific method involves:
-Not A because it does not need operational definitions
-Maybe B because only something you will need operational definitions nd it does involve theories, hypothesis, and research.
-It cannot be C because it involves not only just those.
-It is definitely not D because the scientific method DEFINENTLY needs theories,, operational definitions, hypotheses, and research.
So the answer to this would be theories and operational definitions as well as hypothesis and research; B.
I hope this helped you! =D
