Correct option is A
The Chicken's Neck Corridor, officially known as the Siliguri Corridor, is a narrow stretch of land located in West Bengal. It connects the mainland of India to its northeastern states,
•The Siliguri Corridor is often referred to as India’s most vulnerable choke point.
• The Doklam standoff (2017) between India and China occurred close to this corridor.
• The corridor is essential for military logistics and civilian transport.
• The corridor includes key infrastructure such as NH 10, rail lines, and the Bagdogra airport.