Question

this defect caused by a combination of heredity and environment is characterized by a gap in the upper lip or palate causing problems with eating, swallowing, and speech. down syndrome cerebral palsy cleft lip and palate fetal alcohol syndrome

Explanation:

Cleft lip and palate is a defect caused by a combination of heredity and environment, characterized by a gap in the upper - lip or palate which leads to problems with eating, swallowing, and speech. Down syndrome is a chromosomal disorder, cerebral palsy is related to brain injury or abnormal development, and fetal alcohol syndrome is caused by prenatal alcohol exposure.

Answer:

C. Cleft lip and palate