This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Validity, if a test is ? 
Select and explain. 
A. Precise, B. Reproducible, C. Repeatable, D. Accurate
D: Accurate
Answer: D: Accurate 
Explanation: Ans. is 'd' i.e., Accurate Validity (Accuracy) The validity of a test is the extent to which it accurately measures which it purpos to measure. In other words its the ability to show which individuals have the disease in question and which do not. Validity has two components - sensitivity & specificity. To be truly valid, a test should be highly sensitive, specific and unbiased.