Question

from ancient egypt to the information age, a revolution. the exchange of digital information - billions of e - mails are sent each day, more than conventional mail. the internet, the marketplace, and e - commerce is growing. it is said that every day half the worlds population uses the interbank financial telecommunication network. as referenda will begin to have on - line voting in many countries, offering people the ability to protect information as it flows. encryption can be seen as providing security. strong encryption has been of great importance in facilitating e - commerce. people need strong encryption in order to protect their privacy. the rsa cipher, early on, has given cryptographers a struggle against cryptanalysts. most important of all, public key encryption. in short, rsa guarantees almost perfect security. as well as protecting the privacy of law - abiding citizens, it also disrupts the communications of criminals. zimmermanns pgp: pgp would automatically perform all the encryption. at the same time pgp would do the necessary jiggery - pokery required to digitally sign the message. upon receiving the encrypted message, bob would select the pgp option, and pgp would decrypt the message and verify the author. nothing in pgp was original - diffie and hellman had already thought of digital signatures and other cryptographers had used a combination of symmetric and asymmetric ciphers to speed up encryption - but zimmermann was the first to put everything together in one easy - to - use encryption product, which was efficient enough to run on a moderately sized personal computer. which sentence is most relevant to the argument that zimmermanns pgp was easy to use? by this stage, sending a pgp encrypted message is becoming quite complicated. the idea cipher is being used to encrypt the message, rsa is being used to encrypt the idea key, and another stage of encryption has to be incorporated if a digital signature is required. to send a message to bob, alice would simply write her e - mail and select the pgp option from a menu on her computer. nothing in pgp was original - diffie and hellman had already thought of digital signatures and other cryptographers had used a combination of symmetric and asymmetric ciphers to speed up encryption.

Explanation:

The sentence "To send a message to Bob, Alice would simply write her e - mail and select the PGP option from a menu on her computer" shows ease - of - use as it describes a straightforward process. The other options either suggest complexity or are about the components of encryption rather than ease of use.

Answer:

To send a message to Bob, Alice would simply write her e - mail and select the PGP option from a menu on her computer.