Which plane is primarily involved in movements that rotate the body or limbs?

The transverse plane is the correct choice because it divides the body into upper and lower sections and is primarily associated with rotational movements. Any motion that involves twisting or turning occurs in this plane. For example, activities such as rotating the torso during a swing or pivoting the legs while keeping the upper body stationary take place in the transverse plane. This plane allows for movements around the vertical axis, which is essential for various athletic actions and everyday motions.

In contrast, the frontal plane, which divides the body into anterior (front) and posterior (back) parts, is more involved in lateral movements like side lunges or lateral raises. The sagittal plane separates the body into left and right sections and primarily involves forward and backward movements, such as running or squatting. The horizontal plane is often used interchangeably with the transverse plane but can refer to movements parallel to the ground in broader contexts. However, in standard anatomical terms, the transverse plane is recognized as the primary plane for rotational movements.