Select the sentence from the text "Crimson Butterflies and Their Mimics" that BEST exemplifies the central idea of the text. Species of butterflies like the Crimson Rose typically fly lazily and slowly, knowing that their unpalatable colors make it unnecessary for them to flee predators. Drinking the sweet and nutritious nectar of the Lantana flower is believed by many scientists to increase its fertility and egg production. The reason that many_predators find them unpalatable is due to their diet. Consuming large quantities of the Aristolochia leaf allows them to sequester several chemical compounds that are poisonous to birds. Some of the chemical compounds that the birds can't stomach include 'aristolochic acid.' Time and experiences teach the birds that the crimson butterfly is best left alone. These Lepidoptera were first identified by Western scientific researchers in 1758. Now, scientists have identified dozens of species that take the same migratory path across Sri Lanka, Southern India, and much of the Pacific Islands.