Sumerians invented writing by drawing on soft pieces of clay because they needed some way to keep track of what they owned.
Hey there!
The answer to your question is the first option: "Born in 1940, Olympian Wilma Rudolph's life would have been much different had the polio vaccine already been discovered."
This is because this topic sentence is a sentence that sounds like it starts a new paragraph, unlike the other options, they are sentences that belong in the middle/end of a paragraph.
Final answer:
First option.
Hope this helps you.
Have a great day!
