B
I think it should change into “The test subject will be observed for the next few days.”
The answer is d because it’s all the above
People in the future will probably think we was so stupid because they are gonna have vehicles that fly and our vehicles are on the ground. Maybe they’ll think we’re cool because we are the ones that have fun and live life. You really don’t know what people will say about us in the future until the future happens. It is very possible that the future is still the same way that it is now, or maybe there will be no future, you never know. With the president we have right now and the way he is running things isn’t really the best with our world, but hey what ever he thinks is right and the smartest decisions are up to him.
The answer is D.
There is no single topic sentence within this piece of writing. A topic sentence is used to summarize what is going to be, or what has been written about, and there is no such sentence within this piece.
Here's a corrected version: "Have you ever ran in a relay race? If you can imagine a relay race, then you'll understand how
<span> the Pony Express worked.</span>" Only one main punctuation error.