Wild ducks often spend a lot of their time in the water. The ducks have special structures, called , that improve the ducks' ability to swim.

show the diagram then i will answer

i need the answer to this too but idk it ; -;

see earlier answer

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.