An Infant,age 5 Months,is Brought to the Clinic by His

An infant,age 5 months,is brought to the clinic by his parents for a well-baby checkup.What is the best advice that the nurse should include at this time about injury prevention?

A) "Keep buttons, beads, and other small objects out of his reach."
B) "Do not permit him to chew paint from window ledges because he might absorb too much lead."
C) "When he learns to roll over, you must supervise him whenever he is on a surface from which he might fall."
D) "Lock the crib sides securely because he may stand and lean against them and fall out of bed."