Answer:
It should be subjective data.
well it increases the permeability of the capillaries to white blood cells and some proteins, to allow them to engage pathogens in the infected tissues... i hope this is what you were looking for
The correct answer is 0.4.. hope this helps !
In this case, it will all came to the material of the target. The easiest one should be the one that is made by nylon target.
The hardest one to knock over would be made by materials such as silicone, which will basically provide strong deflection for the ball
hope this helps