This isn't a great question. It's an attempt at an LSAT-like Match the Flaw setup, but the answer doesn't match the flaw in the argument as precisely as it should. However, here's the broad outline it's operating on:
The original argument sets up a conditional relationship: 3-point --> soft touch. There are two important things to understand about conditionals: 1) they are absolute, not tendencies, and 2) we can flip and negate them to get an equivalent rule: NO soft touch --> NO 3-point. Put those together and you can see that the premise is saying that if someone doesn't have a soft touch, they ABSOLUTELY CANNOT develop the skill of shooting 3-pointers. The next sentence immediately goes against this first premise. It says that since Wilt Chamberlain was a great player, he would have broken this rule and been great at 3-pointers. This cannot be true given the first sentence.
D follows that same general outline. It presents a rule and then shows someone who breaks the rule. However, it's a very loose match to say the least. First, the initial premise isn't an absolute statement like a conditional. Surely it doesn't mean that every single person had to serve. It just means that among those forced to serve, there were both powerful people and poor people. Further, the information in the second sentence is very different from the information in the original. The information that Stevens' father was a federal judge is the only proof we have that he was among "the powerful," but it also shows why he was able to get an exemption. There's no parallel to this in the Chamberlain example. But in any case, since the original didn't set up an absolute requirement, this doesn't have to be false. The original conclusion was actually impossible. All D does is retain the loose underlying idea of a conclusion that seems to go against the premise. None of the other answer choices do that, so it's the best we've got, but I wouldn't call it a correct answer.