Explanation: To understand the context of the statements, we need to delve into the history and development of Kolkata, the capital city of West Bengal.
1. **Kolkata Metro**: The Kolkata Metro, also known as the Calcutta Metro, is the first underground metro system in India. It was inaugurated on October 24, 1984, making Kolkata the first city in the country to have a metro system. The metro has been a significant mode of public transportation, reducing traffic congestion and providing a reliable service to the city's residents and visitors.
2. **Human-powered Rickshaws**: Human-powered rickshaws, also known as cycle rickshaws, have been a part of Kolkata's transportation landscape for over a century. They were introduced in the early 20th century and have since become a symbol of the city's culture and heritage. Despite the introduction of modern transportation methods, cycle rickshaws continue to be a popular mode of transport, especially in the narrow streets of Kolkata.
3. **Calcutta Session of the Congress**: The Indian National Congress held its annual session in Calcutta (now Kolkata) in September 1920. This session was significant because it was during this time that Mahatma Gandhi convinced other leaders to launch a non-cooperation movement. The movement was aimed at achieving swaraj (self-rule) and supporting the Khilafat cause, which was a movement to protect the Ottoman Caliphate. The non-cooperation movement was a turning point in India's struggle for independence, as it marked the first large-scale civil disobedience movement under Gandhi's leadership.
Each of these statements highlights a different aspect of Kolkata's history and its role in India's development. The first statement emphasizes Kolkata's pioneering role in modern transportation, the second statement reflects the city's cultural heritage, and the third statement underscores Kolkata's importance in the Indian independence movement. Therefore, all three statements are true, making option C the correct answer.