Answer:
B. “Sunk were at once the winds; the air above” (Line 13)
Explanation:
"The Odyssey" is an epic poem that tells the story of Odysseus's adventures and his long travel back home after the Trojan War.
This particular excrept tells of his encounter with The Sirens, creatures residing on an island and luring the sailors with their enchanting songs.
Following Circa's advice, Odysseus orders his crew to put a wax in their ears so they wouldn't hear the song and to tie him firmly to the mast so he could hear the song.
This excerpt describes the ship passing by the Sirens' island and line 15 says "Some demon calm’d the air and smooth’d the deep" meaning that the weather had suddenly changed.
This claim is supported by the line suggested in answer B which says that the strong winds that followed them on their travel suddenly stopped.