Question

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what is an artificial cavern caused by an underground explosion? a. camouflet b. crater c. subsurface uxo d. surface uxo

Explanation:

To solve this, we analyze each option:

• Option A: A camouflet is defined as an artificial cavern formed by an underground explosion, where the explosion doesn't break the surface.
• Option B: A crater is a depression formed on the surface (e.g., from meteor impacts or surface explosions), not underground - formed caverns.
• Option C: Subsurface UXO (Unexploded Ordnance) refers to unexploded weapons underground, not a cavern.
• Option D: Surface UXO is unexploded ordnance on the surface, not a cavern.

So the correct option is A as it matches the definition of an artificial cavern from an underground explosion.

Answer:

A. Camouflet