Narmada River Flow Direction

Statement 1 is correct - The Narmada occupies a linear rift valley (graben) formed by tectonic activity, which naturally causes westward flow. Statement 2 is descriptively true but does not explain why it flows west; the Vindhyas are to the north and Satpuras to the south, but this geographical position does not determine its westward flow. Statement 3 is correct - The general topography and slope of Central India is westward, contributing to the river's westward course. The primary reason is the rift valley structure (tectonic origin) combined with the westward slope of the terrain. Statement 2 alone does not explain the phenomenon; the rift valley and topographic slope are the determining factors.