The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Occurrence of malocclusion in given population is best described as:   (A) Prevalence rate   (B) Incidence rate   (C) Morbidity   (D) Probability
['(A) Prevalence rate <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Prevalence rate \n (B) Incidence rate \n (C) Morbidity \n (D) Probability <> possible answers', '  Occurrence of malocclusion in given population is best described as: <> context@']