Which of the following correctly describes the phenomenon of river capture?
1
The process by which a river diverts its course due to tectonic activity.
2
A river flowing through a steep slope shifts its path to a lower, adjacent valley due to headward erosion.
3
The formation of multiple channels in the lower course of a river, leading to delta formation.
4
The deposition of sediments in the riverbed, causing a shift in the main river channel.