The study of pre-history relies on multiple disciplines:
1. Geomorphology - Helps in understanding landforms and environmental changes over time.
2. Paleobotany - Studies ancient plant remains to reconstruct past environments and human interactions.
3. Paleoanthropology - Focuses on human evolution and the study of ancient human fossils and artifacts.
Since all three disciplines contribute significantly to pre-historic studies, the correct answer is All of the three.