Answer:
required by a legal, moral, or other rule; compulsory.
Explanation:
The answer is D. To create a way to exchange data between research computers. It's easier to email data then try to send it in the mail, mostly because that takes longer and birds aren't used as a mode of mail transportation anymore
<span>D)
This strip mall will not only help me, ladies and gentlemen, but help
all other struggling businesses in this difficult economy</span>
