The correct option is B Ficus — Anemophily
Yucca is pollinated by the yucca moth, also called Pronuba moth.
Ficus exhibits the trapdoor mechanism of pollination, where an insect lays eggs in the ovary of the flowers and in turn the pollen grains stick to the body of the insect which then becomes a pollinating agent.
Salvia exhibits protandry or maturation of the male reproductive structures before the female reproductive structures.
Cleistogamy is the pollination that happens within a floral bud before it opens. This is observed in Viola.