Final answer:
The midsagittal plane is the term for the plane that divides the body into equal right and left halves, as shown in anatomical illustrations. The correct option is B.
Step-by-step explanation:
The plane that divides the body into right and left halves is known as the midsagittal plane (option b). This vertical plane runs directly down the middle of the body, creating two equal halves. Figure 24.5 illustrates the midsagittal plane on different animals, showing it divides the body exactly in half into right and left portions.
In contrast, the coronal plane, also known as the frontal plane, divides the body into anterior (front) and posterior (back) portions, and the transverse plane or horizontal plane cuts the body horizontally into upper and lower parts. When a vertical plane divides the body into unequal right and left sides, it is referred to as a parasagittal plane or a longitudinal section.