Final answer:
The autonomous stage refers to a stage in motor skill development where individuals are able to perform skills automatically and without conscious effort.
Step-by-step explanation:
The autonomous stage, as described by Fitts and Posner, refers to a stage in motor skill development where individuals are able to perform skills automatically and without conscious effort. During this stage, the individual has mastered the basic components of the skill and is able to execute it fluidly and with precision.
For example, in basketball, an athlete in the autonomous stage would be able to shoot a free throw without having to consciously think about the steps involved such as the grip, stance, and follow-through.
In summary, the autonomous stage is characterized by the ability to perform a skill effortlessly and without conscious thought, indicating a high level of mastery and automaticity.