Our research has focused on a drug which is so _____ as to be able to change brain chemistry.

1. A.
   powerful
2. B.
   influential
3. C.
   monstrous
4. D.
   vigorous

Our research has focused on a drug which is so _____ as to be able to change brain chemistry.

A. powerful     B. influential      C. monstrous      D. vigorous

Our research has focused on a drug which is so _____ as to be able to change brain chemistry.

        A. powerful                 B. influential           C. monstrous                  D. vigorous

Our research has focused on a drug which is so _____ as to be able to change brain chemistry.

        A. powerful      B. influential       C. monstrous            D. vigorous

Our research has focused on a drug which is so _____ as to be able to change brain chemistry.

        A. powerful      B. influential       C. monstrous            D. vigorous