AC Shadows Riddle answer: What sucks in from the bottom and lets out from the mouth?

Assassins Creed Shadows has some unique NPC interactions where you can place bets and answer riddles for a reward. One of the riddles you can find has an NPC ask you what sucks in from the bottom and lets out from the mouth with three options to answer.

Assassins Creed Shadows ‘What sucks in from the bottom and lets out from the mouth?’ riddle answer

Riddle location

In the world of AC Shadows, you will sometimes come across NPCs on the street who will reach out to you with a riddle. These NPCs appear randomly, and a speech bubble will appear over their head. You can speak to them, and they’ll ask you to solve a riddle with a wager. You must wager 50 Mon to start the riddle challenge, where the riddler will bet the same in return.