Which sentence demonstrates a correct use of a semicolon?

Which sentence demonstrates a correct use of a semicolon?

• A. The theory was promising; however, replication failed to confirm it.
• B. The theory was promising, however replication failed to confirm it.
• C. The theory was promising; replication failed to confirm it.
• D. The theory was promising, replication failed to confirm it.

Answer: (A)

This item tests how to punctuate when a semicolon is used to connect two independent clauses, especially when a contrastive transition like however appears. The best example places the semicolon before the transitional word and follows it with a comma: The theory was promising; however, replication failed to confirm it. This shows the standard pattern: semicolon, then a conjunctive adverb, then a comma. The reasons the other forms aren’t as good: putting a comma before however doesn’t correctly join two independent clauses, since the semicolon is the punctuation that signals the close of the first thought and the start of the contrasting second thought. Using a semicolon without a following transitional word can still be correct, but it doesn’t illustrate the common and precise way to signal contrast with however. And a sentence that relies on just a comma to link two independent clauses is a comma splice, which is not acceptable punctuation.

This item tests how to punctuate when a semicolon is used to connect two independent clauses, especially when a contrastive transition like however appears. The best example places the semicolon before the transitional word and follows it with a comma: The theory was promising; however, replication failed to confirm it. This shows the standard pattern: semicolon, then a conjunctive adverb, then a comma.

The reasons the other forms aren’t as good: putting a comma before however doesn’t correctly join two independent clauses, since the semicolon is the punctuation that signals the close of the first thought and the start of the contrasting second thought. Using a semicolon without a following transitional word can still be correct, but it doesn’t illustrate the common and precise way to signal contrast with however. And a sentence that relies on just a comma to link two independent clauses is a comma splice, which is not acceptable punctuation.