Concept:Drainage patterns describe how rivers flow based on slope, rock structure, and erosion history.
Explanation:The correct matching is determined by understanding each drainage pattern’s defining feature.
Insequent: This pattern shows no apparent reason for its path because it does not adjust to underlying rock or surface slope.
It corresponds to feature 2: “No apparent reason why it follows the path it takes”.
Consequent: The course is set by the original slope of the land, following the general direction of the terrain.
It corresponds to feature 4: “Whose course is determined by the original slope of the land”.
Subsequent: This tributary develops by headward erosion along weak rock belts after the main consequent river forms.
Its direction is controlled by rock structure, matching feature 1: “Whose direction of flow is controlled by the rock structure”.
Resequent: It flows in the same direction as the original consequent stream but at a lower level, forming later.
It corresponds to feature 3: “Flow in the same direction as the consequent stream but at a lower level”.
Thus the pairs are: A–2, B–4, C–1, D–3, which matches the second option in the list.
Answer:Option 2