Mark the odd one with respect to girdle bones.

The glenoid cavity articulates with the ..... to form a joint.

$A$: Tibia is stronger and is present medially,whereas fibula is the outer and slender bone of the lower leg or shank.
$R$: Tibia has a sharp crest in the shaft and a projection on the inner side of the ankle called the lateral malleolus.

In mammals,each half of the pectoral girdle consists of:

The trochlear notch of the ulna articulates with the trochlea of which bone?

Which one of the following is the correct matching of three items and their grouping category?