भारत की राष्ट्रीय आय में कौन सा क्षेत्र सर्वाधिक योगदान देता है?

Which of the following categories of workers and economic activities are typical constituents of the informal sector? 1. Artisans, cottage industrialists, petty traders, and tea shop proprietors2. Garbage pickers, auto-rickshaw operators, unauthorized taxis, and repair persons3. Self-employed individuals running micro-enterprises4. Micro-scale production activities with low capital requirements, low skill levels, and low entry barriers

In the Indian economy, which sector employs the highest percentage of the workforce but has a relatively lower share in the total GDP?