Correct Answer - A
Pruning helps in making the hedge dense as it frees the axillary buds from apical dominance. In fact, the apices of the plant axis, (e.g. shoot apex) has the highest concentration of auxin which suppresses the axillary buds while promotes th growth of apical bud. When the shoot apex is cut down through prunmg, the axillary buds grow and the hedge becomes dense