Final answer:
The sentence that is punctuated correctly is option D) Zane tried on the blue, polo shirt before deciding on the striped one.
Step-by-step explanation:
The sentence that is punctuated correctly is option D) Zane tried on the blue, polo shirt before deciding on the striped one.
In this sentence, the commas are correctly used to separate the adjectives 'blue' and 'polo' that describe the shirt. The comma after 'shirt' is used correctly to separate it from the phrase 'before deciding on the striped one'.