Final Answer:
Leisha is likely to be around 3 years old. So, the correct option is b. 3.
Explanation:
Leisha's growth of 4.5 inches and a 3-pound weight gain within a year align more closely with the typical growth pattern of a toddler. Children tend to experience rapid growth during their first few years, with an average annual increase in height and weight. A 4.5-inch growth and a 3-pound weight gain are more indicative of the developmental changes observed in toddlers rather than older children or adolescents.
Considering the average growth rate of children, particularly during the early years, Leisha's growth aligns with the typical growth trajectory seen in toddlers between the ages of 2 to 4 years old. This age range is characterized by significant physical development, including notable height and weight gains. Leisha's growth pattern is more consistent with this stage of childhood, pointing towards her likely age being around 3 years old.
Additionally, children tend to undergo growth spurts during their toddler years, which can result in notable increases in both height and weight within a relatively short period. The rate of growth gradually slows down as children approach school age, making it less likely for Leisha's growth pattern to correspond with that of an older child.
Considering these factors, Leisha's growth of 4.5 inches and a 3-pound weight gain in a year strongly suggest that she is likely around 3 years old, fitting within the expected developmental milestones for toddlers.
So, the correct option is b. 3.