Answer :
Final answer:
Option 4 is the correctly punctuated sentence since it correctly uses commas to set off the non-restrictive clause 'which is stocked full of books'.
Explanation:
The question is asking which sentence is punctuated correctly concerning the description of a class library. In English punctuation, relative clauses that provide additional information but are not essential to the meaning of the sentence should be set off by commas. In this case, 'which is stocked full of books' is a non-restrictive clause, and therefore, it should be set off by commas.
The correct sentence is: Our class library, which is stocked full of books, is amazing. This sentence uses commas to set off the non-restrictive clause properly, making option 4 the correctly punctuated sentence.
