Answer:
A or C
Explanation:
They were stone slabs with engravings or carvings meant to give glory to kings, but they also often went above doorways. I would say A though, since they didn't always go above doors.
The central idea is that using solar power is better for the economy, environment, and society.
Synonyms help us connect unknown words with known words. For example, one may not know the meaning of the word "nefarious" when used in this context: "The offense was more nefarious than previously thought." If we replace "nefarious" with "evil" or "wretched" the meaning is more comprehensible to those who don't know the meaning of "nefarious": The offense was more evil (wretched) than previously thought."
I hope this helps, I used nefarious as a somewhat uncommon term to better illustrate my point, and to explain why we use synonyms to learn new words. Simply put, synonyms bridge us to the unknown using the known as solid ground build from.
