An Education Researcher Was Interested in Examining the Effect of the Teaching

An education researcher was interested in examining the effect of the teaching method and the teacher on the reading level of students with learning disabilities.257 students with learning disabilities participated in an experiment.There are four different teachers (Juliana,Felix,Sonia,and Helen) and three different teaching methods (A,B,and C) .Students are randomly assigned to a teaching method and a teacher.Those who studied with Sonia using method B achieved the highest scores on a reading test.Identify the subjects studied.

A) Teacher
B) Students with learning disabilities
C) Score on reading test
D) Students who studied with Sonia using method B