The correct option is C Artificial vegetative propagation by layering
Natural vegetative propagation doesn’t require any human interference. However, as it is evident in the image given, the stem has been bent and buried in the soil and then tied to a support. This suggests that it is an artificial method of propagation. In artificial vegetative propagation, it is only in layering that we bury a stem in the soil and then use it to grow a new plant while it is still connected to the parent plant.