সঠিক উত্তর হচ্ছে: Orogenetic force
ব্যাখ্যা:
Folding is the result of orogenetic force. Orogeny is a mountain building process. Orogenic processes involve severe folding and affecting long and narrow belts of the earth's crust. In contrast to epeirogenic movement, orogenic movement is a more complicated deformation of the Earth's crust.