The answer is A hope this helped
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.
True, is the correct answer.
In order to use the source you need to know the author and whether he/she has biases or may not be reliable.
Yes it is. Since he is of french blood like the others they should consider it. Although reason may not mater to them they should still consider it because he is of french blood.
