Which plane divides the body into right and left halves?

The mid-sagittal plane, also known as the median plane, is responsible for dividing the body into equal right and left halves. This plane runs vertically from the front of the body to the back and bisects it down the middle. When viewed in anatomical studies, the mid-sagittal plane helps in understanding the symmetry of the body and organizes anatomical structures into right and left portions.

In contrast, the coronal plane divides the body into anterior (front) and posterior (back) sections, the transversus plane divides the body into superior (upper) and inferior (lower) sections, and the lateral plane is a less commonly used term that doesn't have a specific anatomical function related to dividing the body in the same way as the mid-sagittal plane. Thus, the mid-sagittal plane's role is foundational in anatomy for delineating left and right sections, making it the correct answer.