In his research, Dr.Caulfield want to compare levels of test anxiety among high school students in grades 10 and 12. His hypothesis is that seniors will have higher levels of test anxiety than sophomores will. His- definition of test anxiety for each person in his sample will be a self-reported test-anxiety level, marked in a questionnaire as “high” “moderate” or “low”
A-Operational
B-Theoretical
C-Subjective
D-Functional