Final answer:
The frontal plane, also called the coronal plane, correctly divides the body into anterior and posterior portions. It contrasts with the midsagittal plane, which divides the body into equal halves, and the transverse plane, which divides it into upper and lower parts.
Step-by-step explanation:
The correct plane that divides the body into anterior (front) and posterior (back) portions is the frontal plane, also known as the coronal plane. The term 'coronal' is derived from the Latin 'corona', which means 'crown'. This plane is used in both anatomical studies and medical imaging to refer to a directional plane that separates the front (ventral) side of the body from the back (dorsal) side.
The other planes mentioned, such as the midsagittal plane (median plane) and the transverse plane (horizontal plane), divide the body in different ways. The midsagittal plane splits the body vertically into equal right and left halves, while the transverse plane cuts the body horizontally into upper and lower portions.