The correct answer is C because we know that layers of government is a characteristic of a form of government and so is A and B so the best answer is C. it never talks about socialization through education in no form of government.
It means he was happy and felt good in his heart. You know when you see or do something like buy your mom a gift she loves and your heart seems to feel like it is filled with happiness? That's the feeling that I believe William Wordsworth is trying to express.
Hope this helped. Have a great day!
