I would say passage 1. Expository text is a non fiction writing meant to inform. It is all facts. The only other one i would consider is passage 3.
Answer:
D. to introduce the topic
<span>JULIET And stint thou too, I pray thee, nurse, say I.
NURSE Peace, I have done. God mark thee to his grace!
Thou wast the prettiest babe that e'er I nursed:
An I might live to see thee married once,
I have my wish.</span>