d) Decades ago, you would have had to deliver a message to someone by physically going to where the other person was or sending a physical letter in the mail.
c) Communication was slow then, making the spread of information slow as well.
a) With increasing advancements in communication technology, it is more and more common for communication to take place online, which allows messages and information to be shared much faster.
b) One common method for sharing messages is email.
e) It is one of the fastest ways to share information, and this is especially true for businesses and professional communication.