Which statement about offensive submarine operations is accurate?

Offensive submarine operations provide strategic advantages due to their unique capabilities in stealth, mobility, and lethality. Submarines can operate undetected in various environments, allowing them to launch surprise attacks on enemy vessels, shipping lanes, and land targets. This stealthiness complicates the enemy's defensive measures, as they must account for a potential submarine threat that is not easily identifiable.

Additionally, offensive submarine operations can exert significant influence on naval battles by disrupting supply lines, gathering intelligence, and supporting broader strategic objectives. The ability to strike from below the surface helps project power and enables forces to execute maneuvers that would be challenging for surface vessels or aircraft alone.

The other options do not accurately represent the role of submarines. It is incorrect to state that such operations are not necessary, as they remain vital for many naval strategies. Limiting these operations to shallow waters disregards their effectiveness across a range of oceanic environments, including deep waters where they can effectively engage and avoid detection. Moreover, while air support can enhance submarine operations, it is not accurate to say they rely solely on it, as submarines can operate independently.