To identify the scholar who defined Human Geography as "Conception resulting from a more synthetic knowledge of the physical laws governing our earth and of the relations between the living beings which inhabit it," we analyze the contributions of each option provided.
Ratzel: Friedrich Ratzel is a key figure in the development of human geography. His work emphasized the relationships between humans and their physical environment, a concept known as environmental determinism. His definition aligns with the idea of synthesizing physical laws with human interactions.
Blache: Paul Vidal de la Blache is known for initiating a school of thought focused on the region as a framework for human geography. He emphasized the significance of local conditions and human activity but did not focus on the synthetic combination of physical laws and living beings as stated in the quote.
Taylor: Griffith Taylor's contributions were significant in promoting regional geography and considering environmental influences on human activity. However, his definition does not match the specific description provided.
Semple: Ellen Churchill Semple contributed to the field of human geography with her study of the influence of the environment on human activities. However, her work mainly follows Ratzel's principles.
Considering the definitions and contributions listed, the individual whose work best fits the definition given in the question is Ratzel.
The definition of Human Geography as "Conception resulting from a more synthetic knowledge of the physical laws governing our earth and of the relations between the living beings which inhabit it" was given by Friedrich Ratzel. He is known for his contributions to the field of Human Geography, particularly his concept of "Lebensraum" (living space), which explored the relationship between human societies and their environments.