Task force protection within a radius of 50 miles is accomplished by:

Creating an air defense zone is the correct approach for ensuring task force protection within a radius of 50 miles. An air defense zone establishes a dedicated area where operational assets can engage airborne threats before they reach the task force, effectively providing a protective umbrella against enemy aircraft or missile attacks. This proactive measure is crucial for maintaining the integrity and operational effectiveness of the task force, as it allows for early warning and interception capabilities.

Establishing such a zone involves employing various sensors, interceptor aircraft, and surface-to-air missile systems to monitor and control the airspace, creating a comprehensive air defense strategy. This approach ensures that any potential threats are identified and neutralized before they can affect the task force's operations.

In contrast, conducting regular offensive operations may not directly address the immediate protection needs of the task force within the specified radius. While offensive operations can disrupt enemy capabilities, they do not provide the same dedicated protective measures as an air defense zone.

Using submarines solely for stealth focuses more on underwater operations and does not contribute to air defense. Though submarines can have a role in broader maritime security, they do not provide comprehensive protection against airborne threats within the targeted area.

Deploying surveillance drones enhances situational awareness and intelligence-gathering capabilities, which is valuable