Which development milestone puts the 4-month-old infant at greatest risk for injury?
A. Switching objects from one hand to another
B. Crawling
C. Standing
D. Rolling over
Correct Answer: D. Rolling over
Option D: At 4 months of age, the infant can roll over, which makes it vulnerable to falls from dressing tables or beds without rails.
Option A: Switching objects from one hand to another does not prove a threat to safety.
Options B and C: A 4-month-old is not capable of crawling or standing.