The region where most volcanoes are located around the Pacific Ocean is known as the

• A. Pacific Ring of Fire
• B. Great Rift
• C. Sundaland
• D. Lesser Sunda Arc

Answer: (A)

Volcanic activity concentrates along plate boundaries, especially where one plate sinks beneath another. Around the Pacific Ocean, many tectonic plates meet and subduct, creating a continuous belt of volcanic arcs and frequent earthquakes. This belt wraps the rim of the Pacific and is known as the Pacific Ring of Fire. It spans the western coasts of the Americas, across Alaska, down through Japan and the Philippines, into Indonesia and New Zealand—areas where subduction melts mantle rock and feeds numerous volcanoes.

That’s why this region is the best answer: it represents the global pattern of intense volcanic activity around the Pacific. The Great Rift is in East Africa and relates to continental breakup, not a Pacific-wide ring. Sundaland is a Southeast Asian landmass with volcanoes but doesn’t form the entire ring. The Lesser Sunda Arc is a segment within the Ring of Fire, not the whole region around the Pacific.