I need help like now plz

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

Respect for the environment means a: loving trees and animals b: not drinking out of streams c: making as little impact as possible on wilderness areas d: only using resources that are high in supply

What is rand's reason for including the ra.pe scene?   how does the event change both roark and dominique?   discuss how current attitudes on relations between the se.xes have changed since the publication of the fountainhead.