Traumatic brain injury is caused by:

• A. An accident or outside force
• B. Infections at birth
• C. Congenital conditions
• D. Degenerative brain disease

Answer: (A)

Traumatic brain injury happens when an accident or outside force directly injures the brain. The injury comes from a physical impact or jolt that disrupts normal brain function, such as a fall, collision, or sudden blow to the head or body. This external force distinction is what sets TBI apart from other issues.

Infections at birth involve pathogens affecting a newborn, not a head injury from an external impact. Congenital conditions are present from birth due to genetics or development, not caused by an external event. Degenerative brain disease refers to progressive conditions that slowly damage brain tissue over time, rather than an acute injury from an external force.