rofessor Marks is most interested in whether his students' knowledge increased during the progression of his math course. Students took a quiz at the beginning of the semester and again at the end of the semester. Professor Marks used a:

What do turbans indicate about the wearer? a.the wearer’s social status the wearer’s social statusb.the wearer’s birthplacethe wearer’s birthplacec.the wearer’s marital statusthe wearer’s marital statusd.the wearer’s religious sect the wearer’s religious sect