Which of the following is a result of extreme turbulence experienced during thunderstorms?

Extreme turbulence during thunderstorms can be highly hazardous and is recognized for posing significant risks to aircraft safety. One of the most critical consequences of such turbulence is the potential loss of aircraft control. This happens when the aircraft encounters violent and unpredictable air currents that can lead to abrupt altitude changes, excessive pitch, yaw, or roll. Pilots may struggle to maintain the intended flight path, making it difficult to control the aircraft effectively.

In contrast, the other options present scenarios that are generally not associated with extreme turbulence. For example, enhanced cargo stability and increased comfort for passengers would not typically occur in extreme turbulence; rather, the instability could lead to discomfort, and cargo may become unsettled. Additionally, extreme turbulence would require more control and maneuvering from the pilots, which might lead to increased fuel consumption instead of a reduction in it. Thus, the correct answer highlights the serious safety concerns that extreme turbulence can introduce during flight.