Which of the following constitutes the large section of the "Urban poor" in India?

Migration from rural areas

A large section of the urban poor in India is largely the overflow of the rural poor who migrate to urban areas in search of employment and a livelihood. The industrialization has not been able to absorb all these people. The urban poor is either unemployed or intermittently employed as casual laborers. Casual laborers are among the most vulnerable in society as they have no job security, no assets, limited skills, sparse opportunities, and no surplus to sustain them.