The correct answer is B. 45° horizontal.
When a ball is thrown, it follows a parabolic trajectory. The maximum distance that the ball can travel is achieved when the angle of release is 45° to the horizontal. This is because at this angle, the ball has the greatest horizontal velocity and the least amount of air resistance.
If the ball is thrown at a lower angle, it will have a greater vertical velocity and will travel higher in the air, but it will also have a greater amount of air resistance, which will slow it down and reduce the distance that it travels.
If the ball is thrown at a higher angle, it will have a greater vertical velocity and will travel higher in the air, but it will also have a smaller horizontal velocity, which will reduce the distance that it travels.
Therefore, the angle of release that will result in the maximum distance traveled is 45° to the horizontal.