Read the following passage and answer the question below. Volcanic eruptions are among the most powerful and awe-inspiring natural phenomena on Earth, formed when molten rock, ash, and gases escape from beneath the planet's crust. Volcanoes typically form along the boundaries of tectonic plates, where immense pressure builds up until it is released explosively or through a slower flow of lava. While eruptions can be devastating, destroying communities and altering landscapes within moments, volcanic activity also plays a crucial role in shaping the Earth's surface and creating fertile soil that supports agriculture in surrounding regions. Scientists monitor active volcanoes closely using seismographs, gas sensors, and satellite imagery to detect early warning signs of an impending eruption, such as increased seismic activity or gas emissions. Despite modern monitoring technology, predicting the exact timing of an eruption remains extremely difficult, which is why many communities near active volcanoes maintain evacuation plans to ensure residents can leave quickly if conditions become dangerous. Question: What is the passage primarily about?
- A. The tallest mountains in the world
- B. The history of earthquake research
- C. The chemical composition of lava
- D. How volcanoes form and the efforts to monitor and prepare for eruptions ✓
Correct answer
D. How volcanoes form and the efforts to monitor and prepare for eruptions
Explanation
The passage covers how volcanoes form, their effects, and how scientists monitor them.