Which of the following is a feature of the RPD?

The RPD, or Ruchnoy Pulemyot Degtyareva, is designed as a light machine gun and is notable for its belt-fed ammunition system. This feature allows for sustained fire, making it suitable for a variety of combat situations by facilitating a higher ammunition capacity without the need for frequent reloading. The belt feed mechanism enables the weapon to maintain a steady rate of fire, which is crucial for support roles in firefighting scenarios.

The other features are less characteristic of the RPD. For example, while some machine guns may be air-cooled or use magazine feeds, the RPD is specifically known for its belt-fed operation, emphasizing its role as a light machine gun in providing continuous firepower. Additionally, its effective range is typically cited as slightly less than the maximum effective range listed in the options, aligning with its classification as a light support weapon. Therefore, recognizing the RPD for its belt-fed capability is key to understanding its function and operational context within military applications.