Concept:Plants with stilt roots, pneumatophores, sunken stomata, and salt glands are adapted to salty, waterlogged coastal environments.Explanation:These features help plants survive in mangrove swamps, where the soil is waterlogged and saline.Stilt roots and pneumatophores aid in support and gaseous exchange.Sunken stomata reduce water loss, while salt glands remove excess salt.Answer:B. mangrove swamps