In the following passage there are blanks, each of which has been numbered. Select the correct option to fill in the blanks. The volcano had been inactive for centuries. There was little warning of the coming____1______, although one account by archaeologists ____2______ that a hard rain and a strong wind had disturbed the ____3_____ calm during the preceding night. Early the next morning, the volcano poured a huge river of ____4_____ rock down upon Herculaneum, completely burying the city and filling the harbor with _____5_____ lava.