The conditions that help learning are usually sorted into physical, mental and environmental groups. A physical condition is one that depends on the growth and readiness of the body and of the nervous system rather than on the state of the mind.

Growth of the organs, muscles and nerves up to the point at which a task becomes possible is such a condition. A child cannot write before the small muscles of the hand and the nerve pathways controlling them have developed far enough, however strong the wish to write may be, and teaching given before that point is largely wasted effort.

A liking for a task, the felt want that pushes a learner into action, and the store of past dealings with the world all belong to the mental and experiential side rather than to bodily growth. Each of them certainly helps learning, but none of them is a bodily condition of it.

maturity option is correct.