The purpose of the graphic showing “Puerperal fever, Yearly mortality rates” is likely:
- to show how the mortality rates at the two clinics changed over time
- to compare the mortality rates at the First Clinic to the Second Clinic
These responses focus on the direct comparison of mortality rates between the two clinics and how those rates evolved over the years, which aligns with the context of the passage regarding Ignatz Semmelweis's findings.