"The Great Hall is open to the public, you must reserve a spot in advance" How is the comma used incorrectly in the sentence above?. . a. The comma attempts to separate a compound predicate.. b. The comma attempts to join two independent clauses.. c. The comma attempts to set apart an essential element.. d. The comma attempts to separate a compound subject.
The comma in the sentence is used to separate the clauses, "The Great Hall is open to the public" and "you must reserve a spot in advance". These clauses are both independent. Thus, the answer to the question above is letter D.
