["What is the characteristic of a central volcano?", "Which of the following geological processes can lead to the formation of precious diamonds and minerals?", "Which of the following volcanoes is considered an extinct volcano?", "What can be produced by the cooling and solidification of molten lava?", "What type of geological formation may contain precious diamonds and minerals?", "How many known active volcanoes are there?", "What is a common source of precious diamonds and minerals?", "What is often found in solidified lava?", "Which of the following volcanoes is considered a dormant volcano?", "What is the name of the type of volcano that throws out lava and fragments of rocks through fissures or cracks on the Earth's surface?"]