Plate Tectonics — Types of Convergent Boundaries Convergent plate margins can occur in which combinations of lithosphere types? Identify the correct set(s).

Introduction / Context:
Convergent boundaries form where plates move toward each other. The nature of convergence depends on whether the colliding plates are oceanic or continental. Recognizing all possible pairings is essential for understanding trenches, volcanic arcs, and mountain belts.

Given Data / Assumptions:

• I = oceanic–oceanic convergence.
• II = oceanic–continental convergence.
• III = continental–continental convergence.

Concept / Approach:
All three pairings occur in nature. Oceanic–oceanic convergence typically creates island arcs and deep-ocean trenches. Oceanic–continental convergence produces volcanic mountain chains on the continent and a trench offshore. Continental–continental convergence, after consuming intervening oceanic lithosphere, produces high plateaus and mountain ranges through crustal shortening and thickening.

Step-by-Step Solution:

Verification / Alternative check:
Examples: I (Mariana), II (Andes), III (Himalaya). These verify all three types exist.

Why Other Options Are Wrong:

• Any subset (I, II), (II, III), (I, III) omits a valid convergent style.

Common Pitfalls:
Thinking continental–continental convergence requires active subduction; it follows after subduction closure and manifests mainly as collision and thickening.

Final Answer:
All of the above