Who or what was faustus talking about when he said oh, thou art fairer than the evening air clad in the beauty of a thousand stars; (scene 13, lines 101–102)   

Helen of Troy

Explanation:

Helen of Troy is a famous classical figure, and she is often presented as the paragon of excellence. She is brought back to life by Faustus because she is considered the most beautiful woman in the world, and she also serves as a symbol for Faustus's most base desires. While he had initially wanted to make the blood pact in order to acquire knowledge, he now seems dominated by his desire to possess her, and to indulge in other worldly pleasures.

the answer is mary made mudpies on monday.

remember alliteration is the occurrence of the same letter or sound at the beginning of adjacent or closely connected words.