hose

Hi all. Does anyone know what the hose is called or the part number is for the single hose that should be here instead of these three? Looks like a makeshift repair but doesn't look very efficient? Thanks all.

Hello! A few years ago, the gas tank was replaced on my 88 wrangler. There was a hanging line come from the frame. I have NO clue what it goes to? I do know that the gas evaporates pretty quickly from the tank. I've looked at schematics and other drawings but I still don't know that I've found...