Explain a character's problem and then offer your character advice on how to solve his/her problem

Which of these novels is considered an important precursor to science fiction

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

If you are looking for the entry affiliation in the dictionary which words could you find at the top of the page? a) aedes aeropause b) aeriphagia afferent c) afiance aforetime d) afoul aflterthought