Final answer:
The fractional saturation for n-equivalent binding sites would be 1 when all sites are fully occupied, therefore, the correct answer is 1/n, representing full saturation per individual site.
Step-by-step explanation:
The question regarding the fractional saturation of sites for n-equivalent binding sites seems to be related to a binding experiment often used in biochemistry to understand how molecules like proteins or RNA interact with various ligands. Fractional saturation refers to the proportion of total binding sites that are occupied by a ligand. In the case of n-equivalent binding sites, where n represents the total number of equal binding sites, the total saturation would be when all n sites are occupied. Therefore, when the sites are fully saturated, the fractional saturation would be 1 because all sites are occupied (fraction of sites occupied = number of sites occupied/total number of sites = n/n = 1). Hence, the correct answer to this question is option (b), which is 1/n, as the saturation level per site is the reciprocal of the total number of sites when each site is considered individually. However, when all sites are occupied, we essentially have full (1 or 100%) saturation.