The correct answer is that selfmanagement allows an individual to use a small repertoire of skills to control several behaviors This is a core advantage as it empowers individuals to manage their own behaviors broadly with a foundational set of skills reducing reliance on external interventions The text explicitly states selfmanagement can utilize a small repertoire of skills to control several behaviors Option A is incorrect because selfmanagement can effectively be used for both private and observable events The text clarifies this by stating can selfmanagement only control thoughts and feelings of course not right selfmanagement can also be used for observable events Option B is incorrect as selfmanagement is highly effective in promoting generalization and maintenance The text states selfmanagement is excellent at promoting generalization and maintenance Option D is incorrect because effective selfmanagement is indeed conceptually systematic distinguishing it from the mentalistic concept of selfcontrol The text mentions selfmanagement is conceptually systematic if done correctly remember we use the term selfcontrol but its also often used incorrectly okay selfcontrol is is almost a mentalism right we need to think in terms of selfmanagement and selfmanagement done correctly is conceptually systematic