This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biostatistics, Subject name: Social & Preventive Medicine
Data of happy,Moderately happy and Very happy is 
Select and explain. 
A. Nominal, B. Ratio, C. Ordinal, D. Interval
C: Ordinal
Answer: C: Ordinal 
Explanation: Ref:Park's Textbook of Preventive and Social Medicine 25th Ed