Folding is the result of-

Correct answer: (c) Orogenic force

Explanation

Orogenic forces are intense horizontal endogenic forces that cause extreme folding, faulting and deformation of the earth's crust resulting in mountain building. Under this, two types of forces work—compressional force and tensional force. Due to compressional force, rock layers bend, which is called “folding”. The upfolded part is called “anticline”, and the downfolded part is called “syncline”.