What are the major components of the T-6B canopy?

The correct answer accurately identifies the major components of the T-6B canopy by specifying the canopy frame assembly and the various transparencies that make up the canopy structure. The canopy frame assembly provides the structural integrity of the canopy, supporting the transparencies which are crucial for visibility and structural integrity of the aircraft. The front windscreen is the primary transparent panel at the front, while the forward transparency refers to the area immediately behind the windscreen. The rear transparency completes the canopy structure, allowing for visibility from the cockpit to the rear of the aircraft.

This option encompasses both the physical framework and the specific glass components that are essential for the pilot's operational visibility, as well as the overall functionality of the cockpit environment. Each of these parts plays a crucial role in maintaining the safety and effectiveness of the T-6B, ensuring that the pilot has an uninterrupted line of sight while also contributing to the aerodynamic performance of the aircraft. Thus, option D accurately encompasses the essential components that define the T-6B canopy.