Final answer:
The solution cannot be determined as saturated, unsaturated, or supersaturated without knowing the solubility of sodium nitrate at 50°C.
Step-by-step explanation:
A solution is saturated when it contains the maximum amount of solute that is capable of dissolving in a given amount of solvent. In this case, 130 g of sodium nitrate is dissolved in 100 g of water at 50°C. To determine if the solution is saturated or unsaturated, you can compare the amount of solute dissolved to the solubility of sodium nitrate at 50°C. Unfortunately, the provided information does not include the solubility of sodium nitrate at 50°C, so we cannot determine the saturation level of the solution. Thus, the answer to the question is d) None of the above.