Step 1: Understanding the Concept:
For a developing economy like India to grow in the age of globalization, it requires physical and digital structures that support production and trade.
Step 3: Detailed Explanation:
Infrastructure includes sectors like transport (roads, railways, airports), energy (power plants), and communications.
Large-scale capital investment in infrastructure is necessary to attract foreign direct investment (FDI) and to improve the ease of doing business.
While health and agriculture are important, "Infrastructure" is traditionally the sector that requires the most massive "capital investment" to drive overall economic development.
Step 4: Final Answer:
India needs capital investment specifically in Infrastructure for its comprehensive development.