Option (D) is correct because service provides most of the employment in Delhi, Mumbai, Chennai and Kolkata. These are the metropolitan cities and consist of multiplexes, restaurants and big hospitals.

Option (A) is not correct because primary sector include mining, farming, fishing and forestry and it provides employment in Haryana, Punjab and Bihar.

Option (B) is not correct because quaternary job involve research and development. It provides employment in Rajasthan, Delhi etc.

Option (C) is not correct because secondary jobs involve making things from raw material. It provides employment in Uttar Pradesh, Gujarat and Tamil Nadu.