Final answer:
Motions in the human body are described as occurring in the sagittal, frontal (or coronal), and transverse cardinal planes, enabling various types of movement such as flexion, extension, abduction, adduction, and rotation(option a).
Step-by-step explanation:
Motions are described as occurring in three cardinal planes of the body, which are: a) Frontal, Sagittal, and Transverse.
The sagittal plane divides the body or an organ vertically into right and left sides. The frontal plane, also known as the coronal plane, separates the anterior (front) portion of the body from the posterior (rear) portion. The transverse plane divides the body or organ horizontally into upper and lower portions.
Understanding these planes is important when discussing motions such as flexion and extension, which occur in the sagittal plane, or abduction and adduction, which occur in the coronal plane, and rotation which typically occurs in the transverse plane.