Subaru Printed 2.0 1998

I took my Subaru to the service center for an alignment, but they couldn't align one of the rear wheels because a metal part where the alignment is adjusted was more bent than usual due to an impact. I want to replace it, but I don't know what that part is called. I really hope someone can give me an idea of ​​the names of the parts in that section so I can buy it. I would be very grateful