This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Social & Preventive Medicine
"Secular trends' relates with 
Select and explain. 
A. Age, B. Religion, C. Time, D. Place
C: Time
Answer: C: Time 
Explanation: (C) Time > The term secular trends implies changes in the occurrence of disease i.e. a progressive increase or decrease over a long period of time generally several years or decades> Cyclic trends : refer to diseases occurring in cycles spread over short period of time which may be days, weeks, months or years> Seasonal tread: refers to diseases due to seasonal variation