What you mentioned is a difference between the two, but not the only one I see. To me, another important difference between (A) and (D) is that no one is talking about PREVENTING the government from doing anything, as (A) does. Instead, the author is saying that the government should POSITIVELY devote space resources to space exploration, not just be immune to prevention from devoting those resources. It's a fine distinction, but an important one (think about saying people SHOULD own guns, as opposed to not be prevented from owning them). The claim in (D) is a stronger one, and is the claim that the author is making. Hope this helps!
Veda-BhadharlaJuly 27, 2020
I understand what you are saying, but I am slightly confused because a the beginning the question does mention those who think that the government should not continue to support the program, which to me sounds like prevention.
