Final answer:
The correctly punctuated sentence is the second one, with commas before and after the nonrestrictive clause 'located just north of campus.'
Step-by-step explanation:
The sentence which is correctly punctuated is: The pizza shop, located just north of campus, has a Friday night special–two large pizzas for ten dollars. This sentence uses commas to set off the nonrestrictive clause 'located just north of campus' which provides additional information about the pizza shop but isn't essential to the meaning of the sentence.
In the other sentences, there are problems with comma usage:
- Sentence 1 incorrectly includes a comma after 'campus,' which is not needed since what follows isn't a independent clause.
- Sentence 3 is missing a comma after 'campus' to complete the separation of the nonrestrictive clause.
- Sentence 4 has no punctuation errors but could be considered stylistically lacking because the nonrestrictive clause isn't delineated with commas, possibly making the sentence harder to read.