Answer:
C) The fleet with the wedding party on board sailed southward on the China Sea; it was a long and perilous voyage.
Step-by-step explanation:
A semicolon is used to link two independent clauses that are related in meaning and it gives the two ideas equal importance when used together.
The correct answer is Option C because it was effectively used to replace the coordinating conjunction "and" in the sentence, thereby linking them up together.