The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Epidemiological surveillance is defined as   (A) Active surveillance   (B) passive surveillance   (C) Sentinel surveillance   (D) Epidemiological surveillance
['(B) passive surveillance <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Active surveillance \n (B) passive surveillance \n (C) Sentinel surveillance \n (D) Epidemiological surveillance <> possible answers', '  Epidemiological surveillance is defined as <> context@']