Which of the following best describes the configuration of the MH-60S rotor system?

The configuration of the MH-60S rotor system is best described as a single rotor with an auxiliary tail rotor. In this design, the main rotor provides the necessary lift and propulsion for the helicopter, while the auxiliary tail rotor functions to counteract the torque generated by the main rotor during flight. This configuration allows for increased stability and control, making it suitable for various operational tasks the MH-60S is designed for.

The main rotor's ability to efficiently generate lift and thrust is complemented by the tail rotor, which helps maintain directional control. This design is common in many helicopters, making it effective and reliable for the diverse missions that the MH-60S undertakes, including search and rescue, troop transport, and medical evacuation.