In which condition is the first round against the cartridge stop held by the extractor, with the weapon on safe and a half load?

The correct choice identifies a situation where the first round is held against the cartridge stop by the extractor. In this condition, the weapon is on safe and has a half load, which typically means that there is a round in the chamber, and the magazine contains additional rounds, but the weapon is not fully loaded with a full magazine.

Condition 2 specifically describes this scenario as it allows for the weapon to be ready for immediate action since there is one round ready and held in place, but the safety is engaged. This setup contrasts with the other conditions typically defined in firearm operation, as Condition 1 would imply a round is chambered and the weapon is ready to fire, Condition 3 would mean that there are no rounds in the chamber, and Condition 4 would indicate that the weapon is completely unloaded. By understanding these distinctions, it becomes clear that Condition 2 is the appropriate classification for this specific arrangement of weapon readiness.