Final answer:
Humanness is defined by anthropologists as the combination of unique biological, cultural, and experiential characteristics that constitute the human species. The definition includes the qualities and state of being human, enshrined in the holistic approach of anthropology which includes the study of human evolution and cultural diversity.
Step-by-step explanation:
Anthropologists define humanness by encompassing a broad understanding of what it means to be human. Humanness is characterized by a combination of biological and cultural attributes, the quality or state of being human, and the unique capabilities and experiences of our species. Anthropologists study humanness through various areas such as evolution, cultural diversity, and how humans adapt to different social and physical environments. Humanness is often defined by not just the physical aspects that distinguish Homo sapiens from other species but also by the complexities of language, thought, social systems, and the capacity for cultural development. When referring to the classification "how do anthropologists define humanness", the answer includes both the understanding of what it means to be human (a) and the quality or state of being human (c). Understanding humanness requires a holistic approach, one which anthropology uniquely provides, examining all aspects of the human experience across time and space. This discipline values cultural diversities and is engaged deeply in recognizing how humans interact with and adapt to their environments and how such relationships impact cultural and biological evolution.