The question below consists of a set of labeled sentences. From the four options given, select the most probable sequence to form a coherent paragraph. A. It provides attachment to muscles of thorax, upper extremities, back and diaphragm with the principal organs of respiration( the lungs) and circulation( the heart) located within the thorax. B. The thorax is the upper part of the trunk with neck above and abdomen below. C. The thorax is supported by a skeletal framework called thoracic cage which is osteo-cartilaginous in nature. D. Since both heart and lungs are vital organs for life, the study of thorax is of immense clinical importance. Correct Answer BCAD The correct sequence should be BCAD Sentence 1 - Gives a gross idea on what the topic is about as in B Sentence 2- Sentence C further briefs out small characteristics related to thorax. Sentence 3- Sentence A is somewhat a more detailed information of the topic mentioned previously. The use of the pronoun 'it' is suggestive that it follows the previous gross and brief introduction. Sentence 4- It is like a conclusive idea which justifies the importance and why the topic is taken under study in the very first place as in D