Mannose and N-Glycosylation

In cellular metabolism, carbohydrates play a critical role beyond energy provision, particularly in the context of glycosylation. Glycosylation is an essential post-translational modification that can affect protein function, stability, and signaling. Within the scope of carbohydrate classification, monosaccharides can undergo various modifications. Among the following options, which carbohydrate structure is most commonly associated with N-glycosylation of proteins?