Which plane divides the body into left and right halves?

The sagittal plane is the correct choice because it specifically divides the body into left and right sections. This plane runs vertically from head to toe, allowing for the visualization and study of structures on either side of the midline of the body. When referring to movements, the sagittal plane facilitates flexion and extension, which are common actions performed in various physical activities.

For practical applications in sports medicine, understanding the sagittal plane is crucial for analyzing movements such as running, jumping, and throwing, which primarily occur in this plane. By assessing the body's mechanics in the sagittal plane, practitioners can identify areas of concern, devise rehabilitation protocols, or enhance performance through targeted training regimens.