Answer:
Before I actually
Explanation:
I think it is the first one. "Before I actually ..."
This tells us that there were two periods in her life: before she decided to compete in track and field and after she decided.
Grammatically, the before tells us that what happened before her decision was not nearly as important as what happened afterward.
So I chose is the after part. It is not really as informative as "Before I actually ..."
I said is not a transition.
She has completed her thought and is summarizing what it means in "and again ..."
