Answer:
b. Discreteness
Explanation:
Displacement is how a language is capable of talking about things that are not immediately present. Duality is an old concept which believed that language was organized in two levels. Productivity is about how language can produce an infinite combination of sounds and meanings, basically.
Finally, discreteness is about pieces of the language that can be broken down and are not even perceived by natural speakers.
Channel proteins move items inside a bit carrier proteins do not
Rhetoric the art of effective or persuasive speaking or writing, especially the use of figures of speech and other compositional techniques.
So it would be A
Can you be more exquisite or explain more.. Im willing to help