Which engine numbers are associated with the CRJ 700?

The correct answer is associated with the CF34-8C1 and CF34-8C5B engines, as these are the specific engine models for the CRJ 700. The CRJ 700 aircraft utilizes the CF34-8C series engines, designed for regional jets to provide optimal performance and efficiency. The CF34-8C1 is the original engine specification, while the CF34-8C5B is an upgraded version that may offer enhanced thrust and improvements in operational parameters.

The relevance of these engine models is rooted in their specifications, which cater to the performance requirements of the CRJ 700, including thrust capacity and fuel efficiency. Recognizing the association of these specific engine models with the aircraft helps in understanding the aircraft's capabilities and maintenance requirements.

Other options contain engine models that either do not apply to the CRJ 700 or vary slightly from the correct identifiers, making them less relevant in this context.