Final answer:
The sentence 'One play that I would like to read is Julius Caesar' is punctuated correctly.
Step-by-step explanation:
The sentence that is punctuated correctly is: One play that I would like to read is Julius Caesar.
This sentence is punctuated correctly because it uses commas to set off the nonessential clause 'that I would like to read'. The commas are placed before and after the clause, helping to clearly separate it from the rest of the sentence.
In contrast, the other sentences have punctuation errors. The first sentence is missing a comma after 'vacant', and the second sentence is missing a comma after 'copper'. The third sentence is missing a comma after 'visit' and before the hyphen.
Learn more about Punctuation in English sentences