In which of the following planes would a cartwheel occur?

A cartwheel occurs in the frontal plane. This plane divides the body into anterior (front) and posterior (back) sections and is associated with movements that involve lateral (side-to-side) motion. During a cartwheel, the body rotates sideways while maintaining vertical alignment, which is characteristic of movement within the frontal plane.

This explanation contrasts with movements in the other planes: the transverse plane is associated with rotational movements around the body, such as twisting; the sagittal plane involves forward and backward movements, such as running or bending; and oblique refers to any movement that occurs diagonally, which is not specific to the lateral movement of a cartwheel. Thus, a cartwheel's mechanics align distinctly with the characteristics of the frontal plane.