Définition et Signification de "offer somebody a carrot"

What is the origin of the idiom "offer someone a carrot" and when to use it?

The idiom “offer someone a carrot” is thought to have originated from the practice of donkey trainers using carrots to entice donkeys to move forward. Donkeys are naturally stubborn animals, and trainers would often dangle a carrot in front of a donkey's face to encourage it to walk. Over time, this phrase came to be used more figuratively to mean to give someone an inspiration to do something.