In about one-third of cases of intellectual disability,the cause is

A) hereditary factors.
B) difficulties experienced during childbirth.
C) mental disorders.
D) unknown.

Intellectual Disability

A condition characterized by significant limitations in both intellectual functioning and in adaptive behavior, which covers many everyday social and practical skills.

Hereditary Factors

The genetic traits and qualities passed down from parents to their offspring, influencing various inherited characteristics and predispositions.

Childbirth

The act or process of giving birth to babies, marking the culmination of pregnancy.