It's C, I know because I got it wrong & it told me.
A.Irrigate
They need to make an irrigation system to water their crops
Answer: With the invention of the printing press, ideas quickly spread across Europe and all parts of the world. It helped the leader of the Protestant Reformation, Martin Luther, to let his message reach a larger number of people It played a significant role in the success of spreading the new Protestant faith in Europe
HOPE THIS HELPS
The correct answer is b.universal because the actual definition for universal is- affecting, or done by all people or things in the world or in a particular group; applicable to all cases. Hope this helps! :)