Pls someone help with exercise 6 and 7

One of the author's purposes in the code book is to explain different types of codebreaking to his readers. which line best demonstrates this purpose? a theoretical breakthrough would be a fundamentally new way of finding alice's private key mathematicians have been studying factoring for centuries, and modern factoring techniques are not significantly better than ancient techniques a more recent development is the so-called tempest attack, which aims to detect the electromagnetic signals emitted in a computer's display unit if scientists could build a quantum computer, it would be able to perform calculations with enormous speed mark this and return save and exit next submit

Buckminster boy. she glared at him. "lizzie, i swear to you, as sure as i'm standing right here—that's a lie. every bit of it. every single bit." "my granddaddy said it was a lie, too." she leaned her head to one side and looked at him steadily. "so why haven't you been down to the island? " "so only you get to ask questions now? " "yes." she waited. "i haven't been down to the island because my father believes that you were using me to you stay on malaga island." "well," she said slowly. "well." "i didn't believe it, either." the sea breeze lay at their feet panting, hoping they would play with it again. based on what turner and lizzie say, which is the best conclusion that can be drawn? they are angered by the lies the adults have been spreading. neither of them is able to fully trust what the other is claiming. each trusts the other and cares a great deal about their friendship. both are worried about the troubles their friendship may bring.

In 3 sentences explain how ambrose bierce's use of foreshadowing or flashback influences "an occurence at owl creek bridge "