Final answer:
From the principles of physics, gravitational force has the least impact on the human body as we are constantly adapted to it, and centripetal force during normal conditions is also tolerable. Hence, for the question, gravitational and centripetal forces may be considered.
Step-by-step explanation:
The question about selecting the two accelerative/inertial forces with the least amount of consequences on the human body does not have a directly correlating answer from the provided information. However, we can infer from knowledge of physics that gravitational force is something the human body is well-adapted to, as it is a field force that acts on us constantly without us perceiving it as harmful.
On the other hand, centripetal force such as that experienced when tetherball rotates around a pole, or the Earth's gravity that keeps the moon in orbit, is also a force that can be experienced by the human body during circular movements without extreme consequences.