The answer is: A.Outside
"When I heard the Learn'd Astronomer" by Walt Whitman is a poem about an student that gets bored during a lecture about an astronomer, this are the final lines of the poem:
“Till rising and gliding out I wander’d off by myself,
In the mystical moist night-air, and from time to time,
Look’d up in perfect silence at the stars.”
The speaker was able to see the starts up in the sky, he was outside.