The correct option is D Archegonium
The archegonial branches arise laterally at the base of the male branch. Achegonia are borne in groups at the apex of these branches. They are less conspicuous, since they are surrounded by a cluster of dull coloured leaves, known as perichaetial leaves. Paraphyses are also present intermingled with archegonia. Since the apical cell itself is used up in the formation of the archegonium, the axis of the female branch has a limited growth.