Answer:
They had no proof whatsoever!
Explanation:
The problem is that, if the american teachers thought they saw that specific painting, and the person who later offered the police officers fruit, and acted surprised, could've hid the painting before the police got here. What the teachers could've done is take a picture and have proof for when the cops did get there. If they didn't have a phone, they should've kept their eye on the painting, someway or another.
HOPE THIS HELPS!! (:
The answer is b his effort to fight oppression without violence
which he did throughout his whole life while fighting against
"What is the name of your dog?" my friend asked.