Answer:
A)It emphasizes how severely the bubonic plague affected people and how quickly it killed them.
Step-by-step explanation:
Based on the details given in paragraphs 1-4, the author describes how the plague came with ships that docked in Sicily as they had infected traders aboard and when the people on the docks who gathered to receive the ship knew what was happening, it was already too late.
The author's explanation of the Black Death emphasizes how severely the bubonic plague affected people and how quickly it killed them.