What type of protection does the Avenger provide to ground troops?

The Avenger system is specifically designed to provide protection against enemy air threats, which is critical for the safety of ground troops. Its primary function revolves around detecting, tracking, and engaging aerial targets such as enemy aircraft and missiles. By effectively neutralizing these air threats, the Avenger ensures that ground forces can operate with a reduced risk of being attacked from above, thus enhancing their overall combat effectiveness.

The other options focus on aspects that the Avenger does not primarily address. While the Avenger may offer some level of defensive capability indirectly related to ground attacks, its main purpose is to eliminate aerial threats. Likewise, although the Avenger could assist with surveillance indirectly, it is not its core function. The system does not provide direct artillery support either; rather, its role is centered on air defense, highlighting its importance in safeguarding ground troops from air assaults.