A concussion is an injury to the brain that needs medical attention.

• A. Strains
• B. Hypothermia
• C. Heat Stroke
• D. Concussion

Answer: (D)

Concussion means the brain has been injured by a blow or jolt, and it can affect thinking, memory, balance, and coordination. Because brain injuries can have symptoms that aren’t immediately obvious and may worsen with time, medical evaluation is important after any significant head impact. Other choices describe issues that are not brain injuries—muscle strains involve muscles, while hypothermia and heat stroke are temperature-related emergencies. A clinician can rule out more serious problems like bleeding or swelling in the brain and guide a safe plan to return to activity. If warning signs appear, such as confusion, repeated vomiting, severe headache, weakness, or seizures, seek urgent care.