Final answer:
Movements performed in the frontal plane are abduction and adduction, which move limbs or digits laterally away from or towards the midline of the body.
Step-by-step explanation:
The movements that can be done in the frontal plane are abduction and adduction. These motions involve moving limbs, hands, fingers, or toes in the medial-lateral direction. Abduction is when a limb or part is moved laterally away from the midline of the body, or in the case of fingers or toes, spread apart. Conversely, adduction brings them toward or across the body's midline, or together.
It is crucial to note that flexion and extension movements occur within the sagittal plane, not the frontal plane, and involve anterior or posterior movements of the body or limbs. Rotation of a part around its longitudinal axis can be medial or lateral, but this is also not in the frontal plane.