Question

33 there are pairs of true ribs; whereas, there are pairs of floating ribs. a 7;5 b 7;2 c 2;5 d 5;7

Explanation:

True ribs are directly attached to the sternum. There are 7 pairs of true ribs. Floating ribs are not attached to the sternum. There are 2 pairs of floating ribs.

Answer:

B. 7; 2