In which year did the first passengers travel through the channel tunnel
D
Correct answer
Explanation
The Channel Tunnel (Eurotunnel) officially opened for passenger services in 1993, with commercial operations beginning in November 1994. The year 1993 marks when the first passengers traveled through, making it the correct answer. The other dates are incorrect: 1892-1893 are far too early (tunnel projects existed but failed), and 1974 is also wrong.