The question is a geographical one, asking to match the rivers to their correct letters on a presumed map. Since the map isn`t provided, we can`t verify the placements, so we will explain the reasoning based on correct answer given.

Option 1 (A-4, B-3, C-2, D-1) proposes that river A is the Amazon, B is Mackenzie, C is Orinoco and D is St. Lawrence.

Option 2 (A-5, B-3, C-1, D-2), the correct answer, suggests that river A is Yukon, B is Mackenzie, C is St. Lawrence and D is Orinoco.

Option 3 (A-5, B-4, C-1, D-3) proposes that A is Yukon, B is Amazon, C is St. Lawrence and D is Mackenzie.

Option 4 (A-3, B-1, C-4, D-2) suggests A is Mackenzie, B is St. Lawrence, C is Amazon and D is Orinoco.

According to the correct answer, the rivers correspond to their locations in Northern and South America with Yukon and Mackenzie in North,