Final answer:
The final comma before the conjunction in a series is necessary to clarify meaning and prevent confusion.
Step-by-step explanation:
In a series with three or more items, the final comma before the conjunction (and, or, nor) is necessary. This comma is known as the Oxford comma or serial comma. It helps to clarify the meaning of the sentence and prevent any confusion. For example, consider the sentence: 'I love apples, oranges, and bananas.' Without the final comma, it would be unclear whether the person loves both apples and oranges or apples, oranges, and bananas as separate entities.
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