Adult females tend to have less weight than adult males due to lesser development of
The female skeleton is generally less massive, smoother, and more delicate than the male. Females in general have lower total muscle mass than males, and also having lower muscle mass in comparison to total body mass, males convert more of their caloric intake into muscle and expendable circulating energy reserves, while females tend to convert more into fat deposits. As a consequence, males are generally physically stronger than females.
So, the correct option is ‘Both muscles and Skeleton’.