Which totally revolutionized industry by increasing efficiency?
a. the factory system b, mass production
c. new materials
d. water power

Option B.

Explanation:

Mass Production, is the right answer.

The Industrial Revolution was a period of time that observed the introduction of new technology. The Industrial Revolution began in Britain and then in other parts of Europe. The introduction of new technology gave a boost to the production of goods and created employment for people. Mass Production totally revolutionized industry by increasing efficiency.

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