The Swimming Lesson (1) "I don't know if I can do this," said Grace, gripping Allison's hand tightly. (2) Allison gave her a reassuring smile and urged her to step into the water. (3) Grace diverted her attention by looking at the swimmers gracefully moving through the water at the other end of the pool. (4) She wished she could swim like them. (5) The blue water appeared quite appealing, but Grace was doubtful about entering the pool. (6) Allison told Grace that the part of the pool they were going to enter was shallow and perfect for beginners and assured her that she would be fine. (7) Allison's words encouraged Grace to step into the water slowly. (8) Grace shivered a little as the cold water touched her skin, and then, she slowly descended into the water. (9) She was now waist-deep in water, and her instructor taught her how to keep her legs afloat and paddle. (10) Allison watched her little sister as she began to relax and enjoy her swimming lesson. Which introductory sentence best fits into the above passage?
