Select a scenario which will likely result in a traumatic brain injury.

The scenario that likely results in a traumatic brain injury involves getting hit hard on the head while playing lacrosse. Traumatic brain injuries (TBIs) result from external forces impacting the head, leading to potential damage to the brain. In contact sports, such as lacrosse, athletes are frequently at risk for head impacts due to the physical nature of the game, including checking and collisions.

In contrast, the other scenarios, while they can involve risk of injury, do not specifically target the head in the same way. For instance, a bench press incident primarily poses a risk of injuries related to the chest or upper body rather than head trauma. Sprinting the 100 meters or competing in a triathlon, although physically demanding, typically involves less risk of blunt force trauma to the head compared to contact sports like lacrosse. Thus, the nature of lacrosse, with its potential for collisions and impacts, makes the scenario of getting hit hard on the head a clear risk factor for traumatic brain injuries.