During which condition is drift most likely to happen?

Drift is most likely to occur during high wind conditions because wind can carry herbicide particles or droplets away from the target application area. When wind speeds are elevated, the potential for herbicides to be moved off-site increases significantly, as the force of the wind can disrupt the intended course of the spray and disperse it over a wider area than intended.

In contrast, low wind conditions tend to minimize drift, as there is less movement of air to carry the droplets away. Heavy rainfall may dilute or wash away herbicides before they can evaporate or drift, and cool temperatures can lead to slower evaporation rates but do not contribute to increased drift potential. Overall, high wind conditions create an environment where drift is more problematic, increasing the risk of unintended damage to adjacent crops or natural habitats.