What factors contribute to an increase in MCRIT?

The correct choice relates to how certain wing designs influence turbulence and stall characteristics, which are closely tied to the concept of minimum control speed in a critical scenario, known as MCRIT.

Swept wings, which are designed to enhance performance at high speeds, reduce the effective lift that is generated at lower speeds and can delay the onset of stall due to their geometry. Thin wings also share this characteristic, as they typically stall at higher angles of attack, again delaying uncontrollable flight situations. By minimizing the chances of stalling during critical phases of flight, such designs contribute to an increase in MCRIT.

In contrast, other factors such as a high wing aspect ratio, additional fuel load, and increased flap deployment either have little effect on MCRIT or can even lead to a decrease in control during critical phases of flight by changing aerodynamic characteristics in ways that might reduce overall stability or change the stall characteristics of the aircraft. Understanding the relationship between these design elements and MCRIT is crucial for maintaining aircraft control during critical flight scenarios.