<span>. fermentation would be the correct answer</span>

Pushpalal (Mid-Hill) Highway (H18) (Nepali: पुष्पलाल (मध्य-पहाडी) लोकमार्ग (रा.१८)) is an ongoing road project in Nepal, which is thought to be 1,776 kilometres (1,104 mi) long. After completion, it will be the longest national highway of Nepal. Nepal has three geographical regions from east to west, plain land or Terai in south, higher mountains or Himalayas in north and hills in middle region. The highway runs through the mid-hills region only. It starts from easternmost hill at Chiyabhanjyang of Panchthar District (Province No. 1) and ends at westernmost hill at Jhulaghat of Baitadi District in far west (Sudurpashchim Pradesh)
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The answer to your question is C
Answer:
Rocks beneath the surface are forced toward the mantle
Magma pockets rise, increasing heat.
Temperature and pressure cause to change minerals
Explanation:
Metamorphic rocks are those that originate from the transformation of an existing rock, called a protolite. In the formation of the metamorphic rock it is necessary that the protolite undergoes several processes of chemical and physical chemical nature, called metamorphism, which causes a change in the structure and minerals of the protolite, forming a new rock, the metabolic rock.
In summary, we can say that during the metamorphism rocks beneath the surface are forced toward the mantle. This increases pressure and heat. Magma pockets rise, increasing heat. Temperature and pressure cause to change minerals