It looks like it just needs to be cleaned unless you’re referring to the paneling in which maybe in the past it was broken and needed to get welded back together.
14 is either a or b 15 is b 16 is a I am pretty sure
What they must do to weight out the content of each others point and think about its out come and choose one that is of more help to everyone in the group
I think the answer will be letter b
