Correct option is D
Rowland Macdonald Stephenson was indeed one of the pioneers of the railways in India. He formed the company,East India Railway, to lay down the railway system in India.
Joseph Locke was an English civil engineer who did discuss railway prospects in India, but his primary focus was the railway from Calcutta to Delhi.
George Stephenson, known as the "Father of Railways," proposed the idea of a line from Calcutta to Mirzapur, Benaras, Allahabad, and beyond.
The Bombay to Thana railway line, opened on 16 April 1853, is indeed Asia's first railway. This milestone marked the beginning of the railway era in India, serving as a critical infrastructure project.
Dalhousie's railway minute outlined the military advantages of railways, enabling quicker transportation of troops and supplies, as well as facilitating the movement of goods across regions, thus contributing significantly to British control over India.