Some flowering plant species, entirely dependent on bees for pollination, lure their pollinators with abundant nectar and pollen, which are the only source of food for bees. Often the pollinating species is so highly adapted that it can feed from—and thus pollinate—only a single species of plant. Similarly, some plant species have evolved flowers that only a single species of bee can pollinate—an arrangement that places the plant species at great risk of extinction. If careless applications of pesticides destroy the pollinating bee species, the plant species itself can no longer reproduce.

ALL the argument is based on a simple thinking or word: synergy

I depend on you and you on me. I die, you die

If a pesticide kills the plant on which the bees ONLY depend on....the bees die

Also true the other way around: the bees die, the plan die because the pollination is impossible

(E) The total destruction of the habitat of some plant species could cause some bee species to become extinct.

Correct

(C) Some bees are able to gather pollen and nectar from any species of plant.

Wrong. I do not know to what extent the pollen gathering is useful with the argument above.

I do not see any room of discussion or doubt