The third. The words hound, grouse, poplar and stand are all nouns.
Focus on what you’re reading !
Your answer should be A) because that is how the sea level rises
A great intellectual and cultural development in Europe and the United States is the source of many discoveries, inventions and revolutions, for example: Declaration of Independence of the USA or French Revolution. It's also the time of philosophers - like Montesquieu, Voltaire, Jean-Jacques Rousseau, Diderot or d'Alembert - who all focus on the same subject: the questioning of political structures and traditional value systems such as religion, absolute monarchy, education, science etc.
"I have a dream" is his most famous quote.