Answer:
What is the word that even in plain sight remains hidden?
I am a fruit. If you take away the first letter of my name I become a crime. What am I?
I'm tall when I'm young and I'm short when I'm old. What am I?
Use me to reward good behavior.
I am perfect with a head perfect without a head; Perfect with a tail perfect without a tail; Perfect with either neither or both.
What flies without wings?