How many engines does the Chinook helicopter utilize?

The Chinook helicopter is equipped with two engines, which is a defining feature of its design. This twin-engine configuration provides several advantages, including increased power and redundancy. The two engines work in tandem to ensure that the helicopter can maintain performance even if one engine fails, making it safer for operations in diverse environments. Additionally, having two engines allows for greater payload capacity and improved lifting ability, enabling the Chinook to transport heavy loads, troops, and equipment effectively. This capability has made the Chinook a vital asset in military operations around the world.

The other options do not apply to the Chinook's design, as it does not operate with a single engine or three or four engines. Each of these configurations would significantly alter its performance and capability characteristics compared to the robust twin-engine setup it utilizes.