The Principle of Use or Lose implies that when it comes to fitness, you "use it or lose it." This simply means that your muscles build strength (hypertrophy) with use and lose strength (atrophy) with lack of use. This also explains why we or lose fitness when we stop exercising.
The answer should be B because people with problems that have to do with drugs and alcohol don’t usually like to get help but their family cares about them and wants them to get help for their own well being.