D. "The crest zone is the highest part of the reef."
Explanation:
Jargon refers to words or expressions that are employed in a particular field or area of knowledge and that are difficult for people in general to understand. For instance, if you are not a lawyer or a Law student, you will most likely find it difficult to keep up with a conversation between two attorneys. They will use expressions belonging to that area which are not commonly used in everyday conversations.
Among the sentences provided, the one that uses jargon is letter D. "The crest zone is the highest part of the reef." "Crest zone" is not an expression we use or hear every day. We know what it means because the rest of the sentence explains it, but it is still jargon.
Squealer explain to them that pigs in milk and apples in order to think well and since the pigs work is brain work it is in everyone’s best interest for the pigs eat apples and drink milk
