Step 1: Analyzing the Nature of Kyphosis:
Kyphosis is a postural deformity characterized by an abnormal exaggerated forward rounding of the upper thoracic spine, leading to a “hunchback” posture. Correcting it requires backward extension postures that stretch the pectoral muscles and strengthen the thoracic erector spinae muscles.
Step 2: Evaluating the Biomechanics of the Listed Asanas:
• Dhanurasana (Bow Pose): Pulls the chest upwards and backwards, directly countering forward thoracic curvature.
• Chakrasana (Wheel Pose): An intense deep backbend that opens up the anterior chest cavity and reverses thoracic flexion.
• Bhujangasana (Cobra Pose): Extends the upper torso and thoracic spine, building strength in the upper back.
• Halasana (Plow Pose): Involves intense forward spinal flexion, which can worsen kyphosis.
Step 3: Matching with Options:
Since options (A), (B), and (C) contain asymmetric side bends (Trikonasana) or forward bends (Halasana, Adhomukhasana), option (D) is the only combination composed entirely of targeted thoracic backbends.