Respuesta :
Its C. The other answers seem to be a workout more than an exercise to impove flexibility in the chest and side muscles.
Answer:
The correct answer will be option-C
Explanation:
Side-stretching increases the flexibility of the muscle of the lower back, between pelvis and ribs and the sides of the rib cage which improves the expansiveness and the cage mobility. This allows the breathing exercise easier.
The chest and arm bend exercises help improve the flexibility of the arms and the Chest.
Thus, Option-C is the correct answer.