A. Helium
B. Nitrogen
C. Sulfur
D. Oxygen
🧠 Explanation:
Helium gas is used in airships to provide lift safely. Knowing this helps students and science enthusiasts understand aviation science. Helium is key for studying physics or engineering in school. Learning this helps with science projects or exploring flight. It’s useful for science classes, making it relevant for understanding buoyancy. Knowing helium’s role helps students grasp its importance, ensuring better comprehension for academic work or general knowledge about airships and their historical use in aviation.
