Concept:The phrase "flew off the handle" is an idiom that means losing one's temper or becoming suddenly angry.Explanation:The expression compares a person's sudden loss of control to a loose axe head flying off its handle.In the sentence, his reaction to the news was immediate and explosive.Therefore, "flew off the handle" does not mean changing a decision, running away, or feeling disappointed.It specifically means he became very angry.Answer:D. became very angry