Please try your hardest to answer :)!

Nicole machiavelli’s famous work, the was about the qualities that made an ideal leader

Read the excerpt below and answer the question. and i live on, but in grief and self-contempt, left here without the light i loved so much, in a great tempest and with shrouds unkempt. no more love songs, then, i have done with such; my old skill now runs thin at each attempt, and tears are heard within the harp i touch. (lines 9-14) which of the lines, taken from the sestet shown above, is the volta?

Match each model with its name and the name of the scientist who created it.