Three signs are used to evaluate effective actions in resuscitation of a newborn?

Three key signs used to evaluate effective actions in the resuscitation of a newborn include the presence of spontaneous breathing, a heart rate above 100 beats per minute, and good muscle tone. Effective resuscitation is indicated by the newborn's ability to cry or breathe on their own, a stable heart rate, and active movement or flexed posture. Monitoring these signs helps healthcare providers assess the success of resuscitation efforts and determine the need for further intervention.