Which of the following is a factor that limits flexibility?

Excessive fat can limit flexibility primarily due to its impact on the body's range of motion and movement efficiency. When there is an excess amount of body fat, it can create additional weight that may hinder full joint motion and the ability to stretch muscles effectively. For instance, when performing dynamic movements or stretches, the increased mass can restrict the natural movement of joints, making it more challenging to achieve optimal flexibility.

Moreover, excessive fat tissue can lead to a decrease in overall activity levels, contributing to reduced flexibility over time as muscles and tendons may become less pliable without regular movement and stretching. In examining flexibility limitations, other factors like muscle tone, endurance, and strength may play roles, but they do not have the same direct impact on the freedom of movement and the ability to stretch that excess body fat does.