Which property of a pesticide would make it more likely to move with water in surface runoff?

The property that would make a pesticide more likely to move with water in surface runoff is high solubility. When a pesticide is highly soluble, it dissolves easily in water, which means that when rain or irrigation occurs, the pesticide can be transported along with the flowing water. This can lead to contamination of water bodies and surrounding areas.

In contrast, other properties such as high toxicity do not directly relate to the movement of pesticides in water; rather, they reflect the harmful effects on living organisms. Low volatility indicates that a pesticide does not easily evaporate into the atmosphere, which does not directly affect its runoff potential. High persistence refers to how long a pesticide remains active in the environment, which may contribute to prolonged exposure but does not facilitate movement with water. These aspects are important in understanding environmental impacts but do not highlight the specific behavior of pesticides in relation to surface runoff like solubility does.