Question

james watt played an important role in the industrial revolution by developing a process to make textiles efficiently. inventing the steamboat to carry goods and people. making steam engines a reliable power source. encouraging the growth of cottage industries.

Explanation:

James Watt improved the steam - engine design, making it a more reliable power source during the Industrial Revolution. He did not invent the steamboat (Robert Fulton is often credited for that), nor did he develop a textile - making process or encourage cottage industries.

Answer:

making steam engines a reliable power source.