Read the passage and select the most appropriate option for the specified blank. The Industrial Revolution began (1) _______ the 18th century and marked a major turning point in human history. It started in England and spread (2) _______ other parts of the world. The invention of the steam engine and the (3) _______ of factories led to significant economic and social changes. Many people (4) _______ from rural areas to cities in search of work. (5) ________, this period also saw the rise of child labour and poor working conditions, which eventually led to the formation of unions to protect workers' rights. Select the most appropriate option for blank 4.

1. moved
2. move
3. moves
4. moving