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Which sentence correctly uses commas to separate items in a list?

The deacidification process preserves pages by neutralizing acid with magnesium oxide, raising the pH level of the paper, and, minimizing the alkaline reserve.
The deacidification process preserves pages by neutralizing acid with magnesium oxide, raising the pH level of the paper and, minimizing the alkaline reserve.
The deacidification process preserves pages by neutralizing acid with magnesium oxide, raising the pH level of the paper, and minimizing the alkaline reserve.
The deacidification process preserves pages by neutralizing acid with magnesium oxide, raising the pH level of the paper and minimizing the alkaline reserve.

Respuesta :

metchelle
The sentence, "The deacidification process preserves pages by neutralizing acid with magnesium oxide, raising the pH level of the paper, and minimizing the alkaline reserve." uses the correct way of putting comma. It was used to separate items (in this case clauses) and it was used before the coordinating conjunction "and" to separate the last clause.

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