Our top story tonight: Mount Etna, Europe's most active volcano, has erupted again, sending ash plumes high into the sky and causing minor disruptions to air traffic in Sicily. Local authorities have issued warnings to residents living near the volcano, but so far, no evacuations have been deemed necessary as the lava flow is contained to uninhabited areas. Scientists are closely monitoring the activity.
What natural force is the subject of this news report?
A) A powerful hurricane.
B) A volcanic eruption.
C) A sudden landslide.
D) A severe drought.