Excerpt from how to make a t-shirt memory quilt
rebecca sparling

4next, you’ll need a cotton fabric for the back of the quilt. experts recommend using cotton fabric because it retains its shape while you sew. substituting the cotton for a more delicate polyester blend only makes the project more difficult for amateur quilters. fortify the flimsy t-shirt material by applying interfacing—a product that reinforces fabrics, making them easier to sew—to the back of each shirt square. fuse the interfacing to the material following the manufacturer’s directions, which will usually instruct you to use a low-heat iron.

according to section four, what is the most likely reason that a polyester blend fabric would make the project more difficult for amateur quilters?
a) polyester does not retain its shape as well as cotton does.
b) polyester does not feel as comfortable as cotton does.
c) you cannot use a sewing machine on polyester.
d) you cannot fuse interfacing to polyester.