DrBenson Discovers a New Hormone,"hormone X," Which Becomes Elevated When

Multiple Choice

Dr.Benson discovers a new hormone,"hormone X," which becomes elevated when people experience extreme anxiety.To establish a reciprocal relationship,Dr.Benson needs to show that ____.

A) blocking the binding sites of "hormone X" leads to feelings of euphoria
B) feelings of euphoria decrease "hormone X" levels
C) people experience anxiety when injected with "hormone X"
D) levels of anxiety correlate with levels of "hormone X"