Phrases or clauses if u know the difference between the two plz help 20pts answer 4, 5, 6, 7, and 8 plz

Besides the skull and cross bones what other shape sometimes appeared on flags flown by pirates?

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

Match each mode of narration to the excerpt in which it is used.