Select the most appropriate meaning of the given idiom.

Take the bull by the horns

To face a difficulty boldly

The most appropriate meaning of the idiom "take the bull by the horns" is to face a difficulty boldly. It means to deal with a difficult situation head-on and to take control of it. For example, you might say "I need to take the bull by the horns and deal with this problem."

The other options are incorrect. "To take leave" means to say goodbye. "To regard with contempt" means to look down on someone or something with a feeling of dislike or disgust. "To feel with heart" means to feel something deeply and emotionally.