Which weather condition should be avoided to minimize drift?

• A. Strong wind.
• B. No wind.
• C. Moderate humidity with sunny skies.
• D. Overcast skies.

Answer: (A)

Drift is driven by air movement. When wind is strong, droplets from the spray are carried far from the target area, increasing off-target deposition. So to minimize drift, you want calm or very light wind—conditions with little air movement. Among typical weather traits, strong wind is the factor to avoid. The other conditions aren’t as directly tied to drift: going with no wind actually reduces drift, and overcast skies or moderate humidity with sun don’t inherently change how much droplets are carried by air; the key control is wind speed and turbulence.