Explanation:
persistence is a personality trait. And for the what do you wonder YOU have to answer about what you wonder about it and what did you learn from it
The answer is letter a because that is very true if you get hooked on that it can and most likely will lead to death.
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