What! The questionmark is there on purpose to confuse you.
Fish can't drown, they can't swim away either if they are in the tank but those three fish that are dead is possible. But they're not taken out from the tank!
The question was asking about the capital B .
The man asks the stranger to point the path back to his own village. If he is from the village of truths, he’ll be pointing at his own village which is where he wants to go. But if he is not, he’ll still be pointing at the same village because he wants to give a dishonest answer.
So, either way will work and he’ll just have to take the path where the stranger is pointing at.