Answer:
A) 40
Step-by-step explanation:
Sudden infant death syndrome (SIDS) is defined as the cause of death in infants with less than 1-year explanation about the cause.
Some of the risk factors of SIDS include prone sleep position, premature birth, maternal smoking during pregnancy, sleeping on a soft surface, and overheating. As per the investigation, the SIDS rate has reduced 40 percent due to a decrease in the frequency of prone sleeping also decreased.
Hence, the correct answer is "A) 40".