Which action occurs within the frontal/coronal plane?

The frontal or coronal plane divides the body into anterior (front) and posterior (back) sections. Movements occurring within this plane primarily involve abduction and adduction.

Abduction refers to moving a limb away from the midline of the body, while adduction involves moving it back toward the midline. For example, when you raise your arms horizontally to the side of your body, you perform abduction; bringing them back down to your sides is adduction. These movements are essential in many physical activities, from sports to everyday tasks, as they enable us to maneuver our limbs effectively in lateral motions.

The other options refer to movements that occur in different planes. Flexion and extension pertain to movements in the sagittal plane, which divides the body into left and right sections. Rotation and twisting typically occur in a transverse or horizontal plane, which divides the body into upper and lower parts. Dorsiflexion and plantar flexion focus on movements of the feet and ankles, also aligned with the sagittal plane. Thus, the correct answer aligns perfectly with the defined motions that occur in the frontal plane.