"The space shuttles is the subject."
Simple formula: find the verb of the sentence then ask the question "who or what performs the verb" and the answer to that question is the SUBJECT of that sentence!
In your sentence; ask the question;
"Who or what have made travel to the International space station convenient and possible?
Answer: The space shuttles (that's your subject)
Content is what I personally would focus on.
The answer would probably be a type of tree, because Mallard is a type of duck. So for example Mallard : duck is the same as Oak : tree
The impoverished that live down the street from me always make me realize how lucky my life is, even though my single parent doesn't make a lot of money.
It was later unearthed that John committed the crime; his fingerprints were found on the trigger of the gun
D is correct.
Hope this helps and please give brainliest!
