What advantage do missiles with low weight have in combat?

Missiles with low weight offer a significant advantage in combat primarily because more of them can be carried on aircraft. When missiles are lighter, they occupy less of the aircraft's overall payload capacity, enabling the carrier to load a greater quantity of munitions. This increased load allows for a higher volume of fire, which can be crucial in combat scenarios where engaging multiple targets or saturating an area with ordnance may be necessary.

Additionally, carrying more missiles can enhance mission versatility, as they can be deployed in various tactical scenarios, allowing the aircraft to respond more effectively to dynamic battlefield conditions. This capability is particularly important in modern warfare, where the ability to engage multiple threats swiftly can alter the outcome of engagements.

The other options, while potentially relevant in different contexts, do not address the direct combat advantage provided by lighter missiles in terms of operational capacity and flexibility.