Final answer:
Rehabilitation for stroke patients typically begins immediately after the stroke occurs, as early intervention is crucial for a better recovery outcome.
Step-by-step explanation:
Rehabilitation for stroke patients typically begins immediately after the stroke occurs, as early intervention is crucial for a better recovery outcome. The sooner rehabilitation starts, the better the chances of regaining lost function and improving quality of life. Time is of the essence in stroke treatment, as clot-busting drugs can be administered within a few hours of the stroke to prevent permanent brain damage. Therefore, option a) immediately after the stroke is the correct answer.