The correct answer is: D. Telecommunication sector
The telecommunication sector is the second largest provider of employment after agriculture in India. It employs over 40 million people, directly and indirectly. The sector has been growing at a rapid pace in recent years, driven by the increasing demand for mobile phones, internet, and other telecommunications services. The growth of the telecommunication sector has had a positive impact on the Indian economy, creating jobs and boosting economic growth.
The textile sector is the third largest provider of employment in India, employing over 35 million people. The sector is facing challenges due to competition from low-cost countries, but it is still an important part of the Indian economy. The chemical sector is the fourth largest provider of employment in India, employing over 25 million people. The sector is growing rapidly, driven by the increasing demand for chemicals in various industries. The iron and steel sector is the fifth largest provider of employment in India, employing over 20 million people. The sector is facing challenges due to overcapacity and falling prices, but it is still an important part of the Indian economy.