Based on the information provided, what is Primate A's primary form of locomotion? a. Knuckle-walking b. Vertical clinging and leaping c. Arboreal quadrupedalism c. Terrestrial quadrupedalism d. Semibrachiation Brachiation

Option C

Explanation:

Please see the image attached

In this image we can see that the Primate A is waking through the tree by using all its four limbs i.e rear and front limbs. Such primates have Arboreal quadrupedalism. Their hand and feet bend towards the direction of the curve of the support. They have long lever arms which provide gear ratio for grasping and greater leaping distance. However, their feet are also able to grasp.  

Option C is correct