I don't know, sorry. I can't think of something
The thesis statement is the first sentence of this paragraph, it should be the last sentence of an introductory paragraph.
THE ANSWER IS A A IS THE ANSWER
Just learned this today! :) <span>The </span>prefix refers to<span> blood. </span>
The would be a because it makes more sense than the other sentences. If you read each of them a will make better sense.