Answer: A. Argentina
A fjord can be described as a long and narrow inlet with cliffs created by glacier action. In the Argentine island of Isla de los Estados is located Argentina’s only fjord. A glacier cutting through a U-shaped valley by the segregation of ice and the abrasion of the bedrock surrounding will eventually lead to the formation of a fjord. The work of the glacier then leaves an over deepened U-shaped valley with abrupt ends terminating at a valley. These valleys become flooded by the ocean and this leads to the formation of a fjord.