A sentence taken word for word from a book is called a DIRECT quotation.
It would have to be: Make sure that you have clearly explained what happened, how it happened, and why.
Answer:
human inventiveness has brought brightness and optimism to the world. the power of love transforms the ordinary lights of city buildings into delicate works of art. people use the lights to brighten and mask the dreariness of their lives. the lighted windows on winter nights symbolize the energy and vibrancy of the city.
Explanation: