Answer:
Answer is B
Explanation:
When a writer calls their readers to action they are asking them to act upon what the subject is referring to. For example, if an author is writing upon politics he may make a call to action by asking the readers to vote.
I think the questions that must be ask are:
a.What does “encryption” mean?
d.What are “key distribution problems”?
All the text is based on the concept "encryption" so it is very important to know what it means in order to undestand the rest of the information. If not, you will be missing important facts. In addition, there are a lot of words used that are derived from this one, so you won't be able to undestand them.
Another important concept that gives a lot of information just by knowing it's meaning is "key distribution problems", they could be two or a thousand, it is important to know what they are and what they do.
The other question that seems important is the one of the "public key cryphtography" but this one can be inferred by the context.
Explanation:
I would say D and C
sorry if it's wrong good luck :)
Answer:
electronic mail and telephone
Explanation:
just i know the answer not the explaination
