(a) raising a load on the palm, and

(b) raising the weight of body on toes?

Solutions:

(a) A Class III lever is one that raises a load on the palm.
The fulcrum is the human arm’s elbow in this case. The effort is exerted by the biceps at the middle, while the load on the palm is at the opposite end.

(c) A Class II lever is one that raises the weight of the body on the toes.
At one end, the fulcrum lies at the toes, in the middle is the load, which is the weight of the body, and at the other end is the muscular effort.