What is wrong with the following sentence? Saline nasal drops can be at risk of rebound congestion or other side effects if overused. * 3 points This is factually inaccurate. Saline nasal drops can never cause congestion. This is poorly phrased; saline nasal drops cannot be subject to risk. The sentence is redundant. Rebound congestion is the only possible side-effect, and so "other side effects" can be removed. The sentence looks fine to me.