Correct Punctuation in a List

Medium Usage And Mechanics Punctuation

Read the following sentence and choose the option that correctly punctuates it:

Before leaving for vacation I always make sure to pack my camera sunscreen and a good book.

Before leaving for vacation, I always make sure to pack my camera, sunscreen, and a good book.

Before leaving for vacation I always make sure to pack my camera sunscreen, and a good book.

Before leaving for vacation, I always make sure to pack my camera sunscreen and a good book.

Before leaving for vacation I always make sure to pack my camera, sunscreen and a good book.

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