What is the name of road network which connects four metro cities of Delhi, Mumbai, Kolkata And Chennai?

Golden Quadrilateral

The correct answer is Option 2: Golden Quadrilateral

NCERT: In India, there are many highways linking the major towns and cities. For example, National Highway No. 7 (NH 7), connecting Varanasi with Kanya Kumari, is the longest in the country. The Golden Quadrilateral (GQ) or Super Expressway is underway to connect the four metropolitan cities — New Delhi, Mumbai, Bangalore, Chennai, Kolkata and Hyderabad.