What does signature reduction entail?

Signature reduction refers to the strategies and technologies implemented to minimize the visibility of an aircraft or any military asset to enemy detection systems. In this context, choosing the option that mentions post-production modifications to minimize visibility is accurate because it aligns with the tactics used to reduce the radar, infrared, or acoustic signatures of an aircraft.

These modifications can include altering the aircraft's shape, using specialized coatings to absorb radar, and changing engine designs to lower heat emissions. By effectively reducing the signature, the aircraft becomes harder to detect, track, and target, enhancing its survivability in contested environments.

Other options, while they might relate to aspects of military capability, do not directly address the concept of signature reduction. Instead, they focus on speed, armor strength, and weaponry, which are separate considerations in overall military strategy and aircraft design.