If the airspeed is increased from 90 knots to 135 knots during a level 60° banked turn, the load factor will:

In a level turn, the load factor experienced by the aircraft increases with bank angle due to the need to counteract the increased centrifugal force acting on the aircraft. When a pilot executes a turn, the load factor is defined as the ratio of the total lift required to maintain level flight to the weight of the aircraft. In a banked turn, that load factor increases as the angle of bank increases.

However, if the airspeed is increased from 90 knots to 135 knots while maintaining the same bank angle of 60°, the lift required to maintain level flight also increases, but the increased airspeed helps generate more lift without needing to increase the bank angle further. As a result, while the load factor will increase, it will not vary with a change in airspeed under the same bank angle when operating within normal limitations.

In this scenario, while the radius of turn is influenced by the airspeed—meaning it can increase with a higher airspeed—the load factor remains constant for a given bank angle. Therefore, the assertion that the load factor remains the same while the radius of the turn increases accurately captures the dynamics of flight in this situation.