Isn't the answer two? Seeing as the average human only has two eyes.
Answer:
The three most important inventions of the first Industrial Revolution include the steam engine, the spinning jenny, and the telegraph. The three most important inventions of the Second Industrial Revolution include the combustible engine, electricity, and the lightbulb.
Explanation:
the reason why is because if you get to read it correct you get to understand more about industrial revolution?
Answer:
i believe it is C) i think i got it wrong... :(