This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiological Study, Subject name: Social & Preventive Medicine
Prevalance is given by which study? 
Select and explain. 
A. Case-control study, B. Cohort study, C. Cross-sectional study, D. Correlation study
C: Cross-sectional study
Answer: C: Cross-sectional study 
Explanation: Ans. is 'c' i.e., Cross-sectional study CharacteristicsCohort StudyCase control StudyCross Sectional StudyDesignProspectiveRetrospectiveOne point in timeIncidenceEstimatedNot estimatedNot estimatedPrevalenceNot estimatedNot estimatedEstimatedCalculationso Incidence rateso Relative risko Attributable risko Odds ratio