Question 3220 Deck General

The correct answer is A) nearly calm, clear nights or early morning. Explanation: The dispersion of H2S (hydrogen sulfide) is worst under nearly calm, clear night or early morning conditions. This is because H2S is heavier than air and tends to accumulate in low-lying areas under stable atmospheric conditions with little wind to disperse it. Gusty winds with rain (B), heavy rain (C), and full sun with high winds (D) would all contribute to better dispersion of the H2S, making these conditions less hazardous than the still, clear night or early morning scenario.