Which aircraft was designed to target the difficult-to-detect Russian submarines?

The SH-60B Seahawk is the correct choice as it was specifically designed to engage and track submarines, particularly those that are less detectable. This aircraft features advanced anti-submarine warfare capabilities, including dipping sonars, torpedoes, and sonar buoys, which are essential for locating and targeting enemy submarines that may otherwise evade detection.

The SH-60B Seahawk is part of the Navy's multi-role helicopter fleet and is equipped to perform various missions, with a significant focus on anti-submarine warfare. Its design incorporates technologies and operational features that align well with the challenges posed by stealthy submarines.

In contrast, the F-22 Raptor, while a highly advanced air superiority fighter, is primarily designed for air-to-air combat and does not focus on anti-submarine operations. The B-2 Spirit serves as a stealth bomber tailored for penetrating enemy airspace; its mission set does not center on submarines. The AH-64 Apache attack helicopter specializes in land combat and is equipped for ground-attack roles, making it less suited for anti-submarine warfare. Each of these aircraft has unique capabilities, but the SH-60B Seahawk stands out for its specific design focus on submarine detection and engagement.