Final answer:
The sagittal plane bisects the body into right and left halves.
Step-by-step explanation:
The plane of motion that bisects the body into right and left halves is the sagittal plane. It divides the body vertically, creating two equal right and left sides. The midsagittal or median plane specifically runs down the middle of the body, while a parasagittal plane divides the body into unequal right and left sides.