The correct option is D Plasticity
The ability of plants to follow different pathways in response to the environment or phases of life to form different kinds of structures is known as plasticity.
For example, in plants such as cotton, coriander and larkspur, the leaves show heterophylly (different forms of leaves develop in a single plant). The leaves of the juvenile plant are different in shape from those in mature plants.
Buttercup leaves also exhibit heterophylly. The shape of leaves produced in air differ from those produced in water due to difference in environment.
Maturity in angiosperms is the time when plants are ready to flower.
Flexibility is the ability to change or bend.
Elasticity is the ability of an object or material to resume its shape after being stretched or compressed.