The correct option is B James Watt
The first steam engine was invented by Thomas Newcomen in 1712 in England. However, Newcomen's engine was inefficient and could only be used near
coalmines, where coal was abundant and cheap enough to run the engine.
If steam engines were to have wider uses, they needed to be improved. James Watt studied the Newcomen's steam engine and introduced refined steam engine which was more efficient and more powerful in 1765.