What are three common causes of developmental delays?

What are three common causes of developmental delays?

• A. Poor parenting, lack of discipline, and overexposure to video games.
• B. Vitamin C deficiency, dehydration, and heat exposure.
• C. Economic hardship, unemployment, and social isolation.
• D. Early brain or birth injuries, genetic disorders, and environmental factors.

Answer: (D)

Three common causes of developmental delays are early brain or birth injuries, genetic disorders, and environmental factors. Early brain injuries can happen around pregnancy or at birth and disrupt normal brain development, leading to delays in motor, speech, or cognitive milestones. Genetic disorders—whether chromosomal conditions or single-gene disorders—are present from conception and can affect development across multiple areas. Environmental factors include prenatal exposures and early-life conditions such as poor nutrition, infections, toxins, or deprivation that limit stimulation and experience, all of which can slow development. In practice, recognizing these categories helps guide screening, evaluation, and planning for early interventions. While factors like parenting style or social disadvantages can influence development, they are not the direct biological or medical causes captured by these three major categories.

Three common causes of developmental delays are early brain or birth injuries, genetic disorders, and environmental factors. Early brain injuries can happen around pregnancy or at birth and disrupt normal brain development, leading to delays in motor, speech, or cognitive milestones. Genetic disorders—whether chromosomal conditions or single-gene disorders—are present from conception and can affect development across multiple areas. Environmental factors include prenatal exposures and early-life conditions such as poor nutrition, infections, toxins, or deprivation that limit stimulation and experience, all of which can slow development. In practice, recognizing these categories helps guide screening, evaluation, and planning for early interventions. While factors like parenting style or social disadvantages can influence development, they are not the direct biological or medical causes captured by these three major categories.