Which of the following is a method of artificial vegetative propagation?

Artificial vegetative propagation is a type of asexual reproduction in plants where new plants are produced from existing vegetative structures. Layering is a method of artificial vegetative propagation where a stem is bent down and covered with soil, while it is still attached to the parent plant. Roots will grow from the buried portion of the stem, and when it is cut and planted separately, it will grow into a new plant that is genetically identical to the parent plant. Therefore, the answer is "Layering".