Final answer:
If a 13-year-old boy is 5.5 feet tall, he is likely to be taller than 5.5 feet at age 18.
Step-by-step explanation:
According to the information provided, growth in height for boys usually stops by about age 18. Therefore, if a 13-year-old boy is 5.5 feet tall, it is likely that he will continue to grow taller until he reaches adulthood. Based on average growth rates, it is reasonable to assume that he will be taller than 5.5 feet at age 18. However, the exact height cannot be determined without additional information, such as the average growth rate for boys between the ages of 13 and 18.