Final answer:
The correct order of the most common chokes from the tightest to most open is F, E, C, A, D, B.
Step-by-step explanation:
The correct order of the most common chokes from the tightest to most open is F, E, C, A, D, B.
The general trend in circulatory system evolution is toward increasingly closed systems. In the case of chokes, an open choke refers to one that allows more air or fluid to pass through, while a closed choke restricts the flow. Therefore, as we move from F to B, the chokes become progressively more open.