Which statement from the excerpt is an example of wordplay?

What symbolic aspect did brother vu and mother leave behind? book = inside out and back again

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

In the poem i felt a funeral, in my brain what rhyme scheme does the poet use and how does it contribute to the poem?