What is the safest way to cross an obstacle?
Answer: D — At a 90-degree angle
The safest way to cross an obstacle is at a 90-degree angle. This is because approaching the obstacle head-on or at a 45-degree angle increases the risk of collision or tripping over the obstacle. Jumping over the obstacle may also increase the chance of injury. Crossing at a 90-degree angle allows for better balance and control, minimizing the risk of accidents.