Light cigarettes, naloxone, methadone, and a sober-up pill are all examples of ________ to affect ...

Light cigarettes, naloxone, methadone, and a sober-up pill are all examples of ________ to affect the relationships among the agent, environment, and members of a population to reduce the rate of occurrence of a disorder..
 
  A. service measures that pharmaceutical companies use to increase
  profit margins
  B. service measures that pharmaceutical companies use to enhance
  goodwill in the communities in which they operate
  C. technologic measures that modify the environment in which a
  substance is used
  D. technologic measures that modify a noxious agent or its effect