We know the editorial says that 77% of people think that crime is increasing, and 87% favor stricter sentences. Thus, the government must address the rising crime rate problem.
The only data involves the use of survey results, so we know that the editorial must somehow misuse these survey results. The conclusion states that the government must firmly address the rising crime rate problem. However, do we even know that the crime rate is rising and that it's a problem? It's possible that the survey responders could be overly paranoid and crime might not be nearly as bad as they think it is. Additionally, it's possible that crime isn't rising even if it is perceived as rising. These flaws are what we need to look out for in the answer choices.
(B) says, "presumes, without providing justification, that there is a correlation between criminal offenders being treated leniently and a high crime rate"
In order for (B) to be correct, the correlation that was mentioned in the stimulus would need to be based on factual evidence (like crime rates), not items such as surveys. And, because surveys are the only type of evidence provided in the stimulus, they can't provide the basis for the flaw that is described in (B). Thus, we can get rid of this answer choice.
(D) says, "fails to distinguish between the crime rates' actually rising and people's believing that the crime rate is rising"
(D) provides us with an excellent synopsis of what the main flaw of the argument is. The perception that crime is rising is not necessarily based in reality, so this is the correct answer choice.
Does this make sense? Let us know if you have any other questions!