Final answer:
The nurse should anticipate the provider to prescribe 0.9% Sodium Chloride as the IV fluid for a client with a sodium level of 155 mEq/L.
Step-by-step explanation:
The nurse should anticipate the provider to prescribe 0.9% Sodium Chloride as the IV fluid for a client with a sodium level of 155 mEq/L. 0.9% Sodium Chloride is an isotonic solution, which means it has the same concentration of sodium as the body fluids. This makes it suitable for correcting imbalances in sodium levels. Other options, such as 0.45% Sodium Chloride, 3% Sodium Chloride, and Lactated Ringer's Solution, have different concentrations of sodium and may not be appropriate for this client's needs.