The gas that filled the electric bulb is

Correct answer: nitrogen

Explanation: ✅ Correct Answer: A) nitrogen 📚 Explanation: Electric bulbs are usually filled with an inert gas like 'nitrogen' or argon to prevent the tungsten filament from burning out. The gas protects the filament from reacting with oxygen at high temperatures. Filling the bulb with these gases also reduces the evaporation of the filament, which helps the bulb last longer. Without such a gas, the filament would oxidize and snap almost immediately when the light is turned on.