Read the excerpt from "Clara Barton’s Childhood.”

Clara quickly tidied the sick-room, ensuring that her patient had everything he needed to speed his recovery. Blankets were folded neatly at the foot of the bed. The curtains were closed, and David’s medicine was stored neatly on the bedside table.

"What have we here?” the doctor said when he returned to find that the eleven-year-old he had earlier reprimanded was now fully in charge of his patient.

Yet, he couldn’t ignore the peaceful room or the young nurse who was so clear-minded and ready to obey his slightest order. When she begged him to let her take care of her brother, he gave his hearty permission, and Clara had won her way.

Based on the words used to characterize Clara in this excerpt, what does the author reveal about her? Select three answers.

Clara was argumentative.
Clara was determined.
Clara was organized.
Clara was level-headed.
Clara was nervous.