## Core Concept
The village health guide (VHG) scheme is a part of India's rural health initiatives aimed at providing basic medical care and health education at the grassroots level. The VHG is a community health worker selected from the village itself, trained to provide primary healthcare services. The population coverage is a critical aspect of this program.

## Why the Correct Answer is Right
The correct answer, **1000 population**, is based on the general guideline for the deployment of village health guides in rural areas. The VHG scheme recommends one VHG for every 1000 population. This ratio ensures that each VHG has a manageable and accessible population to cater to, allowing for more personalized and effective healthcare delivery.

## Why Each Wrong Option is Incorrect
- **Option A: 500 population** - While having more VHGs could potentially improve healthcare access, the standard recommendation is not one VHG per 500 population.
- **Option C: 5000 population** - This ratio seems too high for the VHG scheme, which aims for relatively close and accessible healthcare. One VHG per 5000 population might make it difficult for the guide to effectively serve the community's health needs.
- **Option D: 10,000 population** - This option is far beyond the recommended population coverage for a VHG, making it impractical for delivering personalized healthcare services.

## Clinical Pearl / High-Yield Fact
A crucial point to remember is that the VHG program focuses on providing **preventive and promotive healthcare**. The goal is to have one VHG per 1000 population, making healthcare more accessible and enabling early intervention. This strategy helps in reducing the burden on higher-level healthcare facilities.

## Correct Answer: B. 1000 population