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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
		
			
			
			
			
			
			
			
			
			
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Mayank vedwal Vedwal
			
According to Fluety's classification of folds which is based on orientation of hinge line and axial surface, A horizontal upright fold will have a horizontal fold axis and vertical axial plane. hence option b is the correct answer. The given diagram shows different types of folds based on their axial plane and fold axis orientation.