Correct Option: D. Bikun and Abuojo Explanation of the Correct Answer Intervisibility refers to the ability of two locations to see each other directly without any obstructions in between, such as hills, buildings, or trees. For two settlements to be intervisible, they must be located in such a way that a straight line of sight can be drawn between them.

1. Understanding the Geography: To determine if Bikun and Abuojo are intervisible, we need to consider their relative positions. If Bikun is situated on a higher elevation and Abuojo is on a lower elevation, or if they are on the same level without any obstructions, they would be intervisible.
2. Visualizing the Terrain: Imagine a topographic map where you can see the elevation of the land. If there are no hills or other geographical features blocking the line of sight between Bikun and Abuojo, they can see each other.
3. Practical Example: If you were standing on a hill in Bikun, you should be able to see the rooftops or landmarks in Abuojo if they are intervisible. This is often tested in geography by asking students to analyze maps or diagrams showing elevation.

Why the Other Options are Incorrect

• Option A: Abuojo and Hua
• Reason: If Abuojo and Hua are separated by a significant geographical feature (like a mountain or a valley), they would not be intervisible. For example, if Hua is located in a valley surrounded by hills, Abuojo would not be able to see Hua.
• Option B: Miki and Abuojo
• Reason: Similar to Option A, if Miki is located at a lower elevation or behind a hill relative to Abuojo, they would not be intervisible. The presence of any obstructions would prevent a direct line of sight.
• Option C: Hua and Bikun
• Reason: If Hua is situated in a low-lying area while Bikun is on a higher elevation, the terrain could obstruct visibility. Thus, they would not be able to see each other directly.

Summary of Key Points

• Intervisibility is determined by the absence of obstructions between two locations.
• Topography plays a crucial role in determining whether two settlements can see each other.
• Always visualize or analyze the terrain when assessing intervisibility.
• The correct answer is D (Bikun and Abuojo) because they are positioned in a way that allows for a direct line of sight without obstructions.

Revision Summary

• Intervisibility means two locations can see each other directly.
• Topography (elevation and terrain) affects intervisibility.
• Analyze maps or diagrams to determine visibility between settlements.
• The correct answer is D: Bikun and Abuojo are intervisible.