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
True about simple randomization is- 
Select and explain. 
A. Every person has an equal chance of selection, B. Less number of samples are obtained, C. Also known as systemic randomization, D. Groups are not distributed
A: Every person has an equal chance of selection
Answer: A: Every person has an equal chance of selection 
Explanation: Park's textbook of preventive and social medicine 23rd edition *With this procedure,the sample is drawn in such a way that each unit has an equal chance of being drawn in the sample.