What type of classic rhetorical appeal is evident in these lines from the speech?

one of my objectives in visiting angola was to forward the cause of those, like the red cross, striving in the name of humanity to secure an international ban on these weapons.

a. intrinsic ethos
b. extrinsic ethos
c. pathos
d. logos

moon-letters were a method of writing invented by the dwarves. moon-letters were ordinary runes, but written in such a way that they could only be read when the light of the moon shone behind the writing. some moon-letters could be read by any moonlight, but it was possible to make the writing even more secret. more sophisticated moon-letters could only be read by the light of the same shape of moon, or at the same time of year, as when they were written. hope this !