Step 1 : Understanding the Question
The question asks us to identify a city that does not serve as one of the four primary cornerstones of India's "Golden Quadrilateral" (GQ) highway network. The GQ is the largest highway project in India, launched to connect the major industrial, agricultural, and cultural centers. To solve this, we must know the four specific metropolitan hubs that define the vertices of this massive transport network.
Step 2 : Detailed Explanation
Identifying the GQ Vertices: The Golden Quadrilateral is designed to connect the four largest metropolitan cities located in the four cardinal directions of India. These are Delhi in the North, Mumbai in the West, Kolkata in the East, and Chennai in the South.
Analyzing Option A - Delhi: Delhi serves as the northern vertex. It is the starting point for the legs connecting to Mumbai and Kolkata. Therefore, it is a primary GQ city.
Analyzing Option B - Mumbai: Mumbai serves as the western vertex. It connects the southern leg from Chennai to the northern leg to Delhi. It is a primary GQ city.
Analyzing Option D - Kolkata: Kolkata serves as the eastern vertex. It connects the northern route from Delhi to the southern route from Chennai. It is a primary GQ city.
Analyzing Option C - Bengaluru: While Bengaluru is a massive IT hub and the highway physically passes through it (on the route between Mumbai and Chennai), it is NOT one of the four defining "corners" or vertices of the quadrilateral. The fourth vertex is actually Chennai.
Conclusion on the Odd One: Because Delhi, Mumbai, and Kolkata are primary vertices while Bengaluru is only an intermediate city along the route, Bengaluru is the "odd one out."
Step 3 : Final Answer
The four primary vertices are Delhi, Mumbai, Kolkata, and Chennai. Since Bengaluru is not one of these anchor cities, option C is the correct answer.