Since D and H are blocked its not D, E, G or H.
Everything flows from A to B to C to J, so it's not A, B, C since they don't get all the way full.
The top of the pipe of L is lower than the pipe of J, so J isn't an option if you know your physics. And I'm the end L is losing all the water to F.
Since D and H are blocked its not D, E, G or H.
Everything flows from A to B to C to J, so it's not A, B, C since they don't get all the way full.
The top of the pipe of L is lower than the pipe of J, so J isn't an option if you know your physics. And I'm the end L is losing all the water to F.
The answer is F.