Which sentence is written correctly?
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A
Since completing the technical course Jasper has had several offers.
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B
Since completing the technical course, Jasper has had several offers.
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C
Since completing, the technical course, Jasper has had several offers.
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D
Since completing the technical course; Jasper has had several offers.
Sentence “Since completing the technical course, Jasper has had several offers.” is written correctly because it properly places a comma after the introductory participial phrase "Since completing the technical course" before the main clause begins.
A) Since completing the technical course Jasper has had several offers.
Missing required comma after the introductory participial phrase creates a fused sentence lacking proper syntactic separation between modifier and main clause.
B) Since completing the technical course, Jasper has had several offers.
Correctly applies comma rules for introductory phrases exceeding three words. The comma creates necessary pause separating the temporal modifier from the independent clause while maintaining logical connection to subject "Jasper."
C) Since completing, the technical course, Jasper has had several offers.
Unnecessarily fragments the participial phrase "since completing the technical course" with misplaced commas. "The technical course" becomes isolated noun phrase disconnected from the verb it completes.
D) Since completing the technical course; Jasper has had several offers.
Semicolons connect independent clauses—not introductory phrases followed by independent clauses. Using a semicolon here violates punctuation rules for clause types.
Conclusion
Introductory phrases exceeding three words require commas before main clauses to create proper syntactic boundaries. Only sentence B applies this rule correctly without fragmenting cohesive phrases or misapplying semicolon punctuation.