The answer is B.
B. Duty of Confidentiality
<em>Hope this helps!!</em>
<em>:))</em>
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Answer is B they make-up all matter
an open system can be affected by the outside environment.
it has flows of information, energy, and/or matter between the system and its environment, and the system adapts to the exchange.
hope i helped! good luck.
I would say a because the land is fertile which helps with farming