Question

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.\

Answer 1

The deacidification process preserves pages by neutralizing acid with magnesium oxide, raising the pH level of the paper, and minimizing the alkaline reserve. (Choice 3)

Step-by-step explanation:

Choice 1 is wrong because you don't need a comma after and. You don't set off coordinating conjunctions with a comma when you give a list of items.

Choice 2 is wrong because you need a comma before and, not after it.

Choice 4 is wrong because you use a comma before and in a list of three or more items. Sentence 4 contains three items but no comma before and, which is wrong.