Select the most appropriate one word substitution for the given group of words.

Pertaining to an individual from birth

Congenital

The most appropriate one-word substitution for the given group of words "pertaining to an individual from birth" is congenital.

• Congenital means existing at or dating from birth.
• Habitual means done or acting in a way that has become a habit.
• Chronic means lasting a long time or recurring frequently.
• Anomaly means something that is abnormal or unusual.

The word congenital is the most appropriate because it specifically refers to something that is present at birth. The other words do not have the same connotation of being present from birth.