Final answer:
The 'leaning-forward' posture that accentuates pressure between the vertebrae is referred to as lordotic posture, which is an excessive anterior curvature in the lumbar region. Option A.
Step-by-step explanation:
A posture that accentuates pressure between the vertebrae due to leaning forward is known as lordotic posture, an excessive anterior curvature in the lumbar region of the vertebral column.
Disorders associated with the curvature of the spine include kyphosis, an excessive posterior curvature, lordosis, an excessive anterior curvature, and scoliosis, an abnormal lateral curvature of the vertebral column.
Lordosis is most commonly associated with obesity or late pregnancy and can be observed when an individual with the condition stands in the anatomical position and exhibits a pronounced enhancement of the lumbar curve. So Option A.