What are the three types of nuclear bursts?

The three types of nuclear bursts are categorized as Air, Ground, and Subsurface, which is why this option is the correct choice.

An airburst occurs when a nuclear explosion is detonated at a height above the ground, which maximizes the blast effects and thermal radiation over a larger area. This type is particularly effective in terms of devastation over a wide region while minimizing fallout.

A ground burst takes place upon or just above the surface of the earth, leading to significant radioactive fallout since the explosion creates a large crater and ejects a considerable amount of earth into the atmosphere. This type of burst is particularly destructive in terms of immediate blast damage and contamination from fallout.

A subsurface burst happens below the ground level, primarily used for tactical purposes. This type can create a more confined explosion while minimizing immediate atmospheric effects. However, it can also lead to significant localized damage and radioactive contamination.

Understanding these classifications is vital for comprehending the various strategic implications and consequences of nuclear detonations. The other options don't accurately reflect the established typology of nuclear bursts and focus instead on different aspects or characteristics related to nuclear weaponry.