Answer:
answer: i. Electric light bulb
Explanation:
The invention of the electric light bulb helped improve the industrialization in many ways.
One of them, was the possibility to install the lightning in the factories, so they could operate all day long, 24 hours, 7 days a week.
This helped increase the productivity and job offers. This invention represents one of the most important discoveries of the Industrial Revolution and the complete human history.
The light bulb was invented in 1879 by Thomas Edison.
