Which of the following is an unguided weapon?

Unguided weapons are those that do not have any guidance system allowing them to alter their flight path after being released. Bombs that are dropped from aircraft fall into this category as they rely primarily on gravity and initial velocity to reach their target, without any means to correct their trajectory during flight. Once released, their path is determined by the angle of release and atmospheric conditions, with no onboard systems to navigate or adjust their course.

In contrast, missiles that can change direction mid-flight, laser-guided munitions, and smart bombs all incorporate guidance systems. These technologies utilize various methods, such as GPS, radar, or laser targeting, to maneuver towards their objectives, making them guided munitions rather than unguided. Hence, the distinction lies in the capability of the weapon to navigate and alter its path, which is not a feature of typical bombs dropped directly from aircraft.