Concept:The upward or raised fold in a fold mountain is called an anticline.Explanation:When horizontal rock layers are compressed, they bend into wave-like folds.The part that bends upward into an arch is the anticline.The part that bends downward into a trough is the syncline.So, the raised portion in a fold mountain is the anticline.If the question intends "upfolded portion", the correct option is anticline.Answer:B. Anticline