Which gas is released by volcanoes in large quantities?
A
Oxygen
B
Sulfur dioxide
C
Nitrogen
D
Helium
Correct Answer: Option B — Sulfur dioxide
Explanation:
Volcanic eruptions release large quantities of sulfur dioxide along with water vapor and carbon dioxide. Sulfur dioxide can form aerosols in the atmosphere that reflect sunlight, temporarily cooling the Earth's climate after major eruptions.