Final answer:
The transverse plane, also known as a horizontal plane, bisects the body into upper and lower halves.
Step-by-step explanation:
The plane of motion that bisects the body into top and bottom halves is known as the transverse plane. This plane creates a horizontal division and is perpendicular to both the sagittal and frontal planes, which means it runs across the body separating it into upper (superior) and lower (inferior) parts. A cross-section typically refers to an image of the body taken along the transverse plane. In medical and anatomical studies, understanding these planes helps with identifying and describing locations or directions on the body. The frontal plane, also called the coronal plane, divides the body into anterior and posterior sections, and the sagittal plane divides the body into right and left parts. For your question, the correct answer is:
a) Transverse plane bisects the body into top and bottom halves.