It helps the chest cavity to become larger.
A. (ii) and (iv)
B. (iii) and (iv)
C. (i) and (ii)
D. (i), (ii) and (iv)
Answer:A
It helps the chest cavity to become larger.
A. (ii) and (iv) B. (iii) and (iv) C. (i) and (ii) D. (i), (ii) and (iv)