Which one of the following is not a natural method of vegetative propagation

Which one of the following is not a natural method of vegetative propagative ?

Which of the following is not an artifical method of vegetative propagation

Which of the following is not an artificial method of vegetative propagation?

Which one of the following is not the natural method of vegetative reproduction ? (A) Suckers (B) Cutting (C) Runner (D) Offsets

Among the following which is not a method of vegetative propagation?

Which is not a method of vegetative propagation

Which is not a method of vegetative propagation?

Which is not a method of vegetative propagation?

Among the following which one is not a method of vegetative propagation