Respuesta :
A and B, though B would be the best choice, because they all have an edge that is straight.
The substance that can be used as a straightedge are the edge of a book and a ruler.
What is a straightedge?
A straightedge is a piece of material (as of wood, metal, or plastic) with a straight edge for testing straight lines .
The edge of a straightedge can be use to test for a straight line. Examples of straightedge includes ruler, tape and many more.
Base on the option, the substance that can be used as a straightedge are the edge of a book and a ruler.
learn more on straightedge here: https://brainly.com/question/4133288
#SPJ2
