The correct answer is: [B] 1869 AD. The construction of the Suez Canal was completed in 1869 AD. This monumental project, initiated in 1854 AD, connected the Mediterranean Sea to the Red Sea, providing a direct maritime route between Europe and Asia. Led by French engineer Ferdinand de Lesseps, the canal’s completion marked a significant milestone in global trade and navigation. The opening of the Suez Canal revolutionized maritime transportation, reducing travel distances and facilitating faster and more efficient movement of goods and vessels between the eastern and western hemispheres. Its strategic importance as a vital international waterway continues to shape global commerce and geopolitics, serving as a crucial artery for trade and transportation. The successful completion of the Suez Canal stands as a testament to human ingenuity and engineering prowess, demonstrating the capacity to overcome geographical and technical challenges to achieve transformative infrastructure projects with far-reaching economic and strategic implications.