Which one for the following is a land-locked country?

1. A

   Uruguay

   Uruguay claims to be a land-locked country situated in South America. However, it possesses a long Atlantic coastline, making this option incorrect.

2. B

   Surinam

   Surinam claims to be land-locked, but it is located on the northern coast of South America facing the Atlantic Ocean. Therefore, this option is not the key.

3. C

   Peru

   Peru claims to be a land-locked nation in western South America. This is incorrect because Peru borders the South Pacific Ocean along its entire western edge.

4. D

   Bolivia

   Bolivia claims to be a land-locked country located in central South America. Official key is (d) because Bolivia is completely surrounded by landmasses without any direct access to the ocean, unlike the other three coastal nations.

Summary. Official key is (d) Bolivia. Uruguay, Surinam, and Peru all share extensive coastlines with the Atlantic or Pacific oceans. Bolivia and Paraguay are the only two completely land-locked sovereign states in South America. Bolivia lost its Pacific coastline to Chile in the late nineteenth century during the War of the Pacific. Thus, option (d) is the correct geographical answer.