Passage Summary: To get more blood in Pulaski, we should focus on the people who already donate all the time, because two other towns found it was too hard to find new donors but easy to get the 'regulars' to step up.

Conclusion: The most effective strategy for boosting Pulaski's blood supply is to persuade current regular donors to give more frequently.

Reasoning: Data from two other cities showed that recruiting new or occasional donors is difficult and costly, whereas those cities successfully increased donations from their regular donor base.

Analysis: The argument relies on an analogy: what worked in Moorestown and Fredricksburg will work in Pulaski. To weaken this, we need to find a 'disanalogy' or a reason why Pulaski is a special case. Perhaps Pulaski's regular donors are already giving at the maximum frequency allowed by law, or maybe Pulaski has a unique demographic that makes first-time donors very easy to recruit. Look for an answer that suggests the 'regular donor' well has already run dry in Pulaski.