Final answer:
The exact percentage of the body's weight that forelimbs bear in animals due to the center of gravity's location varies among species; however, in a quadruped, it is often more than 60%.
Step-by-step explanation:
The percentage of the body's weight that the forelimbs bear due to the center of gravity being more cranially located is not explicitly provided in the references, but it is widely accepted that in a quadruped animal (like most mammals), the forelimbs typically bear a larger fraction of the body's weight compared to the hind limbs. This is because the center of gravity in these animals is often located closer to the front of the body.
However, the exact percentage can vary among different species and is affected by the anatomy of the animal, particularly the placement of limbs under the body and the associated musculoskeletal structure. For instance, in a typically balanced quadruped, the forelimbs might carry anywhere from 60% to 65% (options c) of the body weight. In contrast, bipedal creatures like humans have a different weight distribution due to their upright posture and the fact that their center of gravity lies above the hips and between the feet.