An imaginary plane passing horizontally through the body at the waist, creating top and bottom portions, is called the:

The correct answer is the transverse plane, which is defined as a horizontal plane that divides the body into superior (top) and inferior (bottom) parts. This plane runs parallel to the ground and is perpendicular to both the coronal and sagittal planes. Understanding this is crucial for fields related to health, fitness, and anatomy, as it helps in visualizing anatomical structures and understanding movements that occur in various planes.

Other options represent different anatomical planes: the coronal plane separates the body into anterior (front) and posterior (back) sections, while the sagittal plane divides it into left and right sections. The midsagittal plane refers specifically to the midline division into equal left and right parts. Understanding the distinctions among these planes aids in effective communication in medical and fitness contexts.