Final answer:
The phrase 'Rembrandt, Paul Cezanne, or Pablo Picasso' uses commas correctly to complete the sentence.
Step-by-step explanation:
The correct phrase that uses commas to complete the sentence is: Rembrandt, Paul Cezanne, or Pablo Picasso.
In this phrase, commas are used correctly to separate the different choices for the student's favorite painter.
The placement of the commas helps to clearly indicate each individual option and makes the sentence grammatically correct.
Learn more about Correct use of commas in a sentence