Continuous adjustment of the centre of gravity can lead to which of the following?

Continuous adjustment of the center of gravity can lead to instability and increased workload for the flight crew. When the center of gravity is frequently adjusted, it may result in challenges related to aircraft control, as stability can be compromised. A changing center of gravity affects the aircraft's performance characteristics, such as lift and drag, which can necessitate constant corrections in flight control inputs. This requires increased attention and workload from the pilot to maintain control and ensure safety, as they must continuously monitor and react to the changes that come with the varying center of gravity.

Instability can result in difficult handling qualities, making it harder for the pilot to maintain proficiency and increasing the risk of pilot fatigue. Thus, managing the center of gravity becomes crucial for maintaining the desired flight characteristics, and continuous adjustments can introduce complications rather than facilitating a stable operating environment.