Final answer:
The main types of human exchange anthropologists have identified include reciprocity, redistribution, and barter, with 'Osmosis' being a biological term unrelated to anthropological human exchange.
Step-by-step explanation:
The main types of human exchange that anthropologists have identified include reciprocity, redistribution, and barter. Reciprocity involves forms of exchange where goods or services are traded with the expectation of a future return in kind, as seen among family members or close friendships. Redistribution refers to a system where goods are collected centrally and then disbursed amongst members of a community, often found in non-capitalist societies. Barter is the direct exchange of goods and services without the use of money. The option 'D) Osmosis' does not refer to a type of human exchange. Osmosis is a biological concept referring to the movement of solvent molecules through a semi-permeable membrane. Therefore, it is not one of the main types of human exchange identified by anthropologists.