Answer:
Its easy to know right thing after something has already happened.
Explanation:
The author tries to demonstrate his thoughts that its better to think before something has already happened. It is important to think about events before they are gone and nothing has left. The person should think about the events and try to make them positive before they already happened and then a person starts thinking about it that why it happened this way.
Is there a clue for this or something so I can help
A seems like the best answer. In the passage, it talks about Anderson being uncomfortable and unsure. It mentions that she was a singer and not an activist. She wasn't ready to make such a big political move and would have rather stayed back. Hope this helps :)