Introduction:
India, with its vast geographical expanse and growing population, has an extensive road network. The road length in India is considered to be the second-largest in the world, making it an important aspect of the country's transportation infrastructure.

Explanation:
The road length in India is in the second position globally, as stated in option 'B'. This position is determined by comparing the road lengths of different countries around the world. Let's delve deeper into the reasons behind India's second position.

Factors contributing to India's road length:
1. Geographical expanse: India is the seventh-largest country in the world by land area. Its vast geographical expanse necessitates an extensive road network to connect various regions, including remote and rural areas.

2. Increasing population: India has the second-largest population globally, which leads to high demand for transportation. As a result, the road network needs to be expanded and improved continuously to accommodate the growing population's mobility needs.

3. Economic growth: India has experienced significant economic growth over the years. This growth has led to increased industrialization, urbanization, and commercial activities, all of which require a robust road network for the transportation of goods and services.

4. Connectivity: Building an extensive road network helps in connecting various regions of the country, including urban and rural areas. It improves accessibility, fosters economic development, and enables better integration of different parts of the country.

5. Infrastructure development: The Indian government has been investing in infrastructure development, including road construction and improvement projects. Initiatives like the National Highways Development Project (NHDP) have played a crucial role in expanding the road network across the country.

Conclusion:
India's road length is the second-largest in the world due to factors such as its vast geographical expanse, increasing population, economic growth, the need for connectivity, and infrastructure development initiatives. The extensive road network plays a vital role in facilitating transportation, supporting economic activities, and connecting various regions within the country.