Final answer:
The sentence with appropriate punctuation is: The concert was fantastic; the band played all their hits.
Step-by-step explanation:
The sentence with appropriate punctuation is: The concert was fantastic; the band played all their hits. This sentence uses a semicolon to separate two closely related ideas and clearly indicates that the band played all their hits. The use of a semicolon helps to convey the connection between the two clauses.
In contrast, the second option lacks any punctuation, which makes it appear as a run-on sentence. The third option uses a comma splice, where a comma is used to connect two independent clauses without a coordinating conjunction. The fourth option uses a hyphen, which does not properly convey the relationship between the two clauses.
Learn more about Punctuation in English sentences