Which bomb type uses a shaped charge for effectiveness?

The penetration bomb is designed specifically to utilize a shaped charge to maximize its effectiveness, particularly against hardened targets such as bunkers or armor. Shaped charges create a focused jet of molten metal that can penetrate through thick materials, making them particularly effective for breaching reinforced structures.

In contrast, general-purpose bombs are designed to produce damage through blast effects and are not specifically engineered with shaped charges. Blast bombs primarily deliver explosive energy to create a shockwave and are not intended for penetration purposes. Fragmentation bombs are optimized to disperse shrapnel over a wide area, relying on blast effects rather than penetrating capability. Therefore, the unique design and function of penetration bombs with shaped charges distinguish them as the correct answer.