Final answer:
The midsagittal plane is the section that divides the body into equal right and left parts.
Step-by-step explanation:
The correct answer to this question is A. Midsagittal plane. The midsagittal plane divides the body into equal right and left parts. It is a vertical plane that runs exactly down the middle of the body, creating two equal halves. An example of the midsagittal plane is a line running from the top of the head down through the middle of the nose and ending at the pubic bone.