Question

which invention was crucial to spreading reformation ideas? steam engine telegraph cotton gin movable type printing press 6/10

Explanation:

The Reformation occurred during the Renaissance period. The movable type printing press (invented by Johannes Gutenberg) allowed for the mass production of printed materials, including religious texts and Reformation - related writings. This made it easier to spread ideas quickly and widely. The steam engine, telegraph, and cotton gin were invented much later and are not related to the spread of Reformation ideas.

Answer:

D. Movable type printing press