Bill loved riding his bike and did it all the time. He had trouble going up hills and sometimes pushed himself to the point of what?\nOptions:\n- falling down\n- give up\n- exhaustion\n- travelling\n- going somewhere
Please answer and provide answer explanation.
exhaustion
Bill loved riding his bike all the time but at a certain point of time he feels exhaustion.

Bill sometimes pushed himself to the point of exhaustion when he had trouble in going up to hills.

.

The answer is exhaustion