I like it! That’s so cool!
What kind of question is this
Your answer is D
All of the other sentences are incomplete and seen to stop in the middle
The topic sentence is almost always the first sentence of a paragraph, to give a very brief summary of what the reader is about to read and also to make the reader interested. This means the best answer for this question is:
B) The greatest gift the Sumerians gave the world was the invention of writing.