Answer: 5 to 7 years old
Explanation: Dyanna is persisting the changes in the nature in the age range of 5 year to 7 years according to the theory of the Erickson .The stages of age in the Erik Erickson's theory is describes the child's behavior and changes that occur in different situation and circumstances. Dyanna is dealing with the goals that she realizes to be her motive of life and with confidence she wants to pursue it.