This question requires identifying the longest river situated in Asia from the provided list of options.
To determine the longest river, we compare the approximate lengths of the candidates:
| River Name | Approximate Length (km) |
|---|---|
| Yangtze River | 6,300 |
| Lena River | 4,400 |
| Indus River | 3,180 |
| Brahmaputra River | 3,848 |
Based on the length comparison:
Therefore, the Yangtze River is the longest river in Asia.