Answer:
I am round. I have only one line. Circle is not my name indeed. What am I?
Use me to reward good behavior.
I am so delicate that even mentioning me breaks me. What am I?
I must be broken before you can use me.
I am long and slim works in light. Has but one eye and an awful bite.
What never gets any wetter no matter how hard it rains?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic