In this question, we are given a list of rivers (List I) and a list of continents (List II). Our task is to match each river with the correct continent. Let`s look at each option and its corresponding codes:

Option 1: A is matched with 3 (North America), B with 1 (Asia), C with 4 (South America), and D with 2 (Africa).

Option 2: A is matched with 4 (South America), B with 2 (Africa), C with 3 (North America), and D with 1 (Asia).

Option 3: A is matched with 3 (North America), B with 2 (Africa), C with 4 (South America), and D with 1 (Asia).

Option 4: A is matched with 4 (South America), B with 1 (Asia), C with 3 (North America), and D with 2 (Africa).

The correct answer is option 4 where all the matches are as follows: A - South America, B - Asia, C - North America, and D - Africa. Therefore, the correct answer is option 4.