A nurse is reinforcing teaching to the parents of a 2-month-old infant who has Down Syndrome. Which of the following statements addressing cognitive ability should the nurse reinforce?

“Cognitive abilities in children with Down syndrome cannot be improved, so focusing on physical health is the only priority."

“Infants who have Down syndrome typically have significantly higher IQ scores compared to typically developing infants."

“Early intervention programs can mitigate cognitive impairments in infants who have Down syndrome."

“Cognitive abilities of infants who have Down syndrome are typically within the average range during the first year of life."