The correct option is
A 1 - Q, 2 - R, 3 - S and 4 - P
Vegetative propagation is a type of asexual method of reproduction seen in plants. A vegetative part (leaf, stem or root) of the plant called vegetative propagule gives rise to an entire plant; it does not include the seed or flower.
Examples of the vegetative propagules include the following:
Bulb is a modified bud consisting of a thickened globular underground stem serving as a reproductive structure in certain plants. Examples include onion.
Bulbils are small aerial rosettes that occur on the flowering stalks of Agave plants.
Figure : Bulbils of Agave
Offset is a stout runner type of a horizontal stem that has only one internode and spreads over the ground surface. Examples include Pistia.
Corm is a vertical, fleshy, underground stem that acts as a food-storage structure in certain plants. Examples include Colocasia.
Figure : Corm