The correct answer is: " some monarchs embraced new ideas from the movement".
The Enlightenment philosophers, such as Locke, Monstequieu or Rosseau, developed ideas that challenged, and ended up derrocating, the power structures of the Old Regime.
They promoted democratic principles, such as the definitions of bills of citizens' rights, social contract (citizens electing political representatives to create goverment through suffrage, in opposition to the prevailing absolute monarchies), and the division of the powers of the state in order to avoid excessive power accumulation in certain sectors, and risks of authoritarism.
Many monarchies were derrocated, as it was the case of the French monarchy during the French Revolution. Other monarchs were able to stay in power by adapting their government system to the new times and adopting some of the Enlightment principles, developing was it known as Enlightened absolutism .