Final answer:
D. John Graunt made notable contributions in the field of demography between 1620-1674. He introduced the concept of vital statistics and analyzed birth and death records to study population change, laying the foundation for the field of demography.
Step-by-step explanation:
Between 1620-1674, John Graunt made notable contributions in the field of demography. He is considered one of the founders of modern demography and was the first to analyze birth and death records to study population change. His work laid the foundation for the field of demography and set the stage for future advancements in understanding human populations.
John Graunt's contributions to demography were significant because he introduced the concept of vital statistics and analyzed birth and death records to draw conclusions about population dynamics. He developed a comprehensive set of statistical methods to analyze population data and explore patterns of mortality and fertility. Graunt's work paved the way for further research on population growth, mortality rates, and other demographic factors.
Johann Peter Süssmilch, a German statistician and demographer, also contributed to the field of demography during this time period. He developed theories and methods to study population growth and analyzed demographic data to understand factors that influenced population change. Süssmilch's work was highly influential in shaping the field of demography and his ideas continue to be relevant in modern population studies.