a. blocking the binding sites of "hormone X" leads <span>to feelings of euphoria </span> <span>b. feelings of euphoria decrease "hormone X" levels </span> <span>c. people experience anxiety when injected with </span> <span>"hormone X" </span> <span>d. levels of anxiety correlate with levels of </span> <span>"hormone X" </span> The answer is c <span>. people experience anxiety when injected with "hormone X"</span>