When too much weight is added to an aircraft, what will be reduced?

When too much weight is added to an aircraft, the angle of climb will be reduced. This is because the aircraft's performance is directly influenced by its weight. The angle of climb refers to the vertical distance the aircraft can gain relative to the horizontal distance traveled during the climb. As weight increases, the thrust required to lift and maintain the climb becomes greater, which can exceed the aircraft's capability, leading to a shallower climb angle.

With higher weight, the aircraft's power-to-weight ratio diminishes, making it less efficient during takeoff and ascent. Consequently, the aircraft will not be able to climb as steeply as it could at a lighter weight, limiting its ability to gain altitude quickly and efficiently. This directly impacts overall performance, especially in critical phases of flight, such as takeoff and initial climb-out.

The other options, while affected by weight in different ways, do not capture the primary consequence of increased weight as effectively as the angle of climb does. Speed of descent, rate of fuel consumption, and landing distance can all be influenced by weight, but the angle of climb remains a critical performance metric that is distinctly affected by excess load.