This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and health, Subject name: Social & Preventive Medicine
[{'content': 'Consider the following health hazards. Which of the associated with enviromental lead exposure? \nSelect and explain. \nA. Lowering of IQ in children \\/ Lowering of systolic blood pressure \\/ Reduced RBC survival and reduced heme biosynthesis & Higher rates of miscarriages, stillbihs and preterm deliveries, B. Lowering of IQ in children & Lowering of systolic blood pressure, C. Lowering of IQ in children \\/ Reduced RBC survival and reduced heme biosynthesis & Higher rates of miscarriages, stillbihs and preterm deliveries, D. Lowering of IQ in children \\/ Lowering of systolic blood pressure & Reduced RBC survival and reduced heme biosynthesis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: parks textbook of preventive and social medicine 23rd edition. *lead poisons many systems in the body and it is paicularly damage to children devoloping brain and nervous system elevated lead levels in children is associated with impaired neuropsychologic devolopment as measued by loss of IQ,poor scholl preformance and behavioural difficulties.', 'role': 'assistant'}]