A mysterious condition which kills apparently healthy infants between the ages of 4 weeks and 7 months is known as?

Sudden Infant Death Syndrome (SIDS) is the most appropriate choice as it is the only one that mentions a condition that affects seemingly healthy infants and has no specific cause or identifiable symptoms. Colic is incorrect as it is not fatal and typically presents with intense crying and difficulty in digestion. Jaundice is incorrect as it refers to a yellowing of the skin and eyes caused by high levels of bilirubin in the blood, which can be treated and is not fatal. Infantile Paralysis is incorrect as it refers to polio, a condition with symptoms including paralysis and muscle weakness, which is not limited to infants and has decreased significantly due to vaccines.