Question

these nobles forced the king to accept limits to his power that were written into a document called the magna carta, or the great charter. this key document established the principle of limited government, a government whose powers and actions are restricted (limited) by a system of laws. this document formed the basis for future constitutional governments for england and eventually the united states. the idea that everyone, even the king, must follow laws is called the rule of law.
question
why did the nobles force king john to sign the magna carta in 1215?
they wanted to increase the kings authority.
they wanted to increase their payments to the king.
they were unhappy with the kings unlimited power
they wanted to establish a democracy in england.

Explanation:

The text states that nobles forced the king to accept limits to his power (written in Magna Carta). This implies they were unhappy with his unlimited power. The other options (increase king's authority, increase payments to king, establish democracy) are not supported by the given text.

Answer:

They were unhappy with the king's unlimited power.