Which three methods are used for mounted land navigation?

The selection of Dead Reckoning, Terrain Association, and Combination as the methods used for mounted land navigation is sound because these techniques collectively encompass the fundamental skills required for effective navigation in diverse environments.

Dead Reckoning involves calculating one's current position based on a previously determined position, taking into account speed, direction, and time traveled. This method is vital when navigating through areas where visual landmarks may not be present or are insufficient to rely on, particularly during mounted operations.

Terrain Association relies on using visible landscape features such as hills, rivers, and buildings to plot a course or verify a current location. This method is essential when traversing unfamiliar terrain, allowing navigators to match physical characteristics of the ground against the map to enhance accuracy.

Combination refers to using both Dead Reckoning and Terrain Association techniques together. This integrated approach maximizes navigational accuracy and situational awareness, ensuring that any discrepancies in position due to environmental factors, potential obstacles, or limitations of one technique can be cross-verified with another for effective navigation.

Thus, the holistic approach in option A uniquely positions these three methods as the essential tools in mounted land navigation, facilitating adaptability and precision on the move.