The correct answer is "M<span>ethadone blocks receptors for heroin." This is the reason why</span><span> those who take heroin while on methadone do not experience heroin's intense psychological effects. Not only that, it reduces the urge to take heroin as well. </span>
When a story is written in third person point of view, it may cut off some of the personal feelings you might get if you were reading the story in first person, or even second person point of view. The thing is, first person is a lot more personal than third person. Third person is kind of like just telling you the story. (Although it is not narrative)