Which method is possible for larviciding using aircraft?

Using aircraft for larviciding is a versatile method that allows for comprehensive coverage of both large and small areas where mosquito larvae may be present. The correct choice indicates that both rotary and fixed-wing aircraft can be employed in this process. Rotary aircraft, such as helicopters, offer the advantage of maneuverability, making it easier to target specific and potentially diffuse larval habitats, while fixed-wing aircraft can efficiently cover larger expanses of water or wetlands.

Employing aircraft for larviciding is particularly beneficial because it enhances the ability to reach aquatic environments that might be difficult to access by ground equipment. The capacity to apply larvicide over large areas from the air can significantly improve overall control efforts against mosquito populations.

The other responses are either too limiting or suggest restrictions that do not accurately reflect the capabilities of aerial larviciding. Thus, acknowledging the full potential of both rotary and fixed-wing aircraft captures the essence of using aviation technology in mosquito control effectively.