Final answer:
The recommended practice after demonstrating an air exercise is to allow the student time to absorb the content and ask questions.
Step-by-step explanation:
After demonstrating an air exercise, the recommended practice is b) Allow the student time to absorb and ask questions. This step ensures that students have a clear understanding of the exercise, which is important for learning and safety purposes. Allowing time for questions helps clarify any doubts and encourages active learning. It is essential for students to feel comfortable with the exercise and understand the purpose and the correct form before they attempt it themselves, as this can prevent injuries and enhance the educational experience.