What are the three roles of guns on aircraft?

The correct answer highlights the specific combat scenarios in which aircraft guns are effectively employed, focusing on air-to-air close-range contact, strafing, and dual roles. In an aerial combat context, air-to-air close-range contact refers to engagements with other aircraft, particularly in dogfight situations where maneuverability and quick reflexes are crucial. Strafing involves attacking ground targets, such as enemy troops or vehicles, typically during ground support missions. The mention of dual role emphasizes the versatility of aircraft guns, which can be adapted for both air-to-air and air-to-ground operations, thus enhancing the effectiveness of the aircraft in various combat situations.

This understanding encompasses a broader scope of military operations and illustrates the multifaceted use of guns beyond a single engagement type, making this answer particularly relevant for roles that modern aircraft play in warfare.