The scientific method involves a. theories and operational definitions. b. theories and operational definitions as well as hypotheses and research. c. hypotheses and research. d. neither theories and operational definitions nor hypotheses and research.

The scientific method involves hypotheses and research.   C

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