What type of scale structure is being used in a question that asks the respondent to write in his or her age on the survey?

What type of scale structure is being used in a question that asks the respondent to write in his or her age on the survey?

What type of scale structure is being used in a question that asks the respondent to write in his or her age on the survey? 










A. Nominal

B. Ordinal

C. Ratio

D. Interval

E. Likert











Answer: C