A nurse is reinforcing teaching about home safety precautions with the parents of a 3-month-old infant. Which of the following instructions should the nurse include in the teaching?

A. Make sure the crib mattress is soft.: A soft mattress is a suffocation hazard for an infant. It is recommended to use a firm mattress to reduce the risk of sudden infant death syndrome (SIDS). B. Start using a highchair for feedings.: At 3 months of age, most infants are not developmentally ready to sit in a highchair. Feeding typically occurs while the infant is held or propped in a reclined position. Highchairs are usually introduced later, around 6 months of age, when the infant has better head and neck control. C. Remove bibs when the infant is going to sleep.: Bibs and other items that could potentially obstruct the infant's airway should be removed before sleep to reduce the risk of suffocation. This is an important safety measure to ensure the infant's safety while sleeping. D. Place no more than one small pillow in the crib.: Pillows should not be placed in the crib for infants, as they present a suffocation hazard. It is recommended to keep the crib free from any soft bedding, including pillows and blankets, to promote safe sleep.