Final answer:
True. A typical 3-year-old girl probably believes that she can run as fast as her 6-year-old sister.
Step-by-step explanation:
The statement is True. A typical 3-year-old girl probably believes that she can run as fast as her 6-year-old sister. At this age, children have not yet fully developed their theory of mind, which is the understanding that others have thoughts, feelings, and beliefs that are different from their own. As a result, they may not accurately assess their own abilities compared to others. However, it is important to note that individual differences can exist among children.