Final answer:
The parent likely made a mistake in stating that their 2-year-old child is 3 meters tall, as this greatly exceeds the typical height range for a toddler, which is closer to 85 to 95 centimeters.
Step-by-step explanation:
The receptionist is likely correct in thinking that the parent has made a mistake in measuring the child's height. The average height for a 2-year-old child is significantly less than 3 meters. Typically, children reach about 50% of their adult height at 2 years old, not their full adult height. Based on growth statistics, a 2-year-old child would be expected to measure between 2 to 3 feet tall (approximately 85 to 95 centimeters), not 3 meters (which is about 9.8 feet). Therefore, an error was possibly made while measuring or reporting the child's height.