Which statement is true about the factors producing stalls?

The stalling angle of attack is independent of speed, meaning that the critical angle at which stall occurs remains constant regardless of the aircraft's speed. This angle, typically referred to as the angle of attack at which the airflow separates from the wing, does not change with variations in airspeed. Whether the aircraft is flying slowly or at a high rate of speed, the stall will occur once the critical angle of attack is exceeded.

In contrast, factors such as aircraft configuration, weight, and load factor can influence stall speed, but the angle of attack itself at which a stall occurs remains the same for a given aircraft. This fundamentally illustrates why understanding the relationship between angle of attack and stall is crucial for maintaining safe flight practices, as pilots need to be aware that they could induce a stall at any speed if the critical angle is surpassed.