Answer:
The correct answer is option b.
Step-by-step explanation:
The regions where volcanoes often occur are the hub of geothermal energy. The site is good for the power plants as the rock present underground must exhibit high thermal gradient and the permeability matters as well. As rocks with higher permeability permits for the free flow of water, and this supply of water is the prime source.
Some of the nations, which have geothermal power plants are the Philippines, United States, Indonesia, and others. It has been witnessed that 85 percent of the entire geothermal production comes from the nations that are present on the Ring of fire.
Thus, the places like geysers, hotspots, or the regions close to the volcanic activity, and the regions subjected to the movement of plates are some of the most potential regions for the set up of power plants.