This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Rural & Urban Health Centres, Workers, Norms, Subject name: Social & Preventive Medicine
Urban Social Health Activist (USHA) workers are proposed to work for population of: 
Select and explain. 
A. 1000-2500, B. 2500-3500, C. 4000-5000, D. 5000-10000
A: 1000-2500
Answer: A: 1000-2500 
Explanation: URBAN SOCIAL HEALTH ACTIVIST (USHA):- Frontline community worker expected to deliver services at the doorstep in community. Link between Urban Primary Health Centre (UPHC) and urban slum population. 1 USHA worker per 1000-2500 population (250-500 households). Woman who resides in the slum, preferably 25-45 years age. Chosen through a community driven process involving urban local body of counselors, self - help groups, anganwadis.