Which term describes no activity for some time and will probably not erupt again?

• A. Active
• B. Dormant
• C. Extinct
• D. Shield Volcano

Answer: (C)

Think about how volcanoes are classified by activity. An active volcano is erupting or has clear signs of imminent eruption. A dormant volcano is sleeping now but could wake up and erupt again. An extinct volcano has no magma feeding it and shows no signs of future eruptions; scientists consider it unlikely to erupt again. The description “no activity for some time and will probably not erupt again” fits extinct, because it implies the volcano has lost its magma supply and isn’t expected to wake up. The term shield volcano is about shape and lava type, not about whether it might erupt again.