__________ doubles the risk of SIDS.
A) Failure to tightly swaddle an infant during sleep
B) Use of a pacifier or a security blanket
C) Placing an infant to sleep on his back
D) Cigarette smoking by a caregiver
Question 2
Mounting evidence suggests that __________ is a major contributor to SIDS.
A) impaired brain functioning
B) higher-than-average birth weight
C) organized and patterned sleep behavior
D) a family history of chromosomal abnormalities