Three-Month-Old Marco Has Died Unexpectedly While Sleeping in His Crib

Multiple Choice

Three-month-old Marco has died unexpectedly while sleeping in his crib at night.The doctors conclude that he had stopped breathing during the night and died with no apparent cause.Which of the following is the mostly likely reason for Marco's death?

A) Anorexia
B) Down syndrome
C) Salmonella infection
D) Sudden infant death syndrome