The answer is D. Mangrove.
Lotus, Hydrilla, and Duckweed are all aquatic plants. Mangroves, on the other hand, are a type of tree that grows in coastal areas. They have special adaptations that allow them to survive in salty water and muddy soil.
Lotus is a perennial aquatic plant that is native to Asia, Africa, and Australia. It has large, showy flowers that are often used in religious ceremonies. Hydrilla is an invasive aquatic plant that is native to Africa and Asia. It has small, green flowers and can quickly take over a body of water. Duckweed is a small, floating aquatic plant that is native to Europe, Asia, and North America. It has tiny, green leaves and can form dense mats on the surface of water.
Mangroves are a type of tree that grows in coastal areas. They have special adaptations that allow them to survive in salty water and muddy soil. Their roots are often exposed to the air, and they have a special type of bark that helps to prevent them from absorbing too much salt. Mangroves are an important part of the coastal ecosystem. They provide a home for many different animals, and they help to protect the coastline from erosion.