when a framed partition butts against a masonry wall, why is a 1 x 2 furring strip applied at the point of…

when a framed partition butts against a masonry wall, why is a 1 x 2 furring strip applied at the point of intersection? to level the surface to allow for expansion to prevent cracking of the gypsum board to provide a nailing surface for the gypsum board
Answer
Brief Explanations:
A 1x2 furring strip is used at the intersection of a framed - partition and a masonry wall to give a surface to which the gypsum board can be nailed. Masonry walls are not suitable for direct nailing of gypsum board, and the furring strip provides a proper nailing surface.
Answer:
to provide a nailing surface for the gypsum board