Even groups that are largely self-sufficient engage in exchange ...

[Ebrown]

Even groups that are largely self-sufficient engage in exchange with other groups. Anthropologists suggest that this is because
 
  a. the need to give to others is biologically determined.
  b. there are always some goods or services that one cannot get for oneself.
  c. exchange creates and sustains relationships that are necessary for other reasons.
  d. most groups have spiritual beliefs that value altruistic behavior.

Question 2

What is reciprocity?
 
  a. A kind of exchange involving money
  b. The collection of goods by a central authority
  c. An exchange of goods or services without the use of money
  d. The exploitation of one group by another

[jazzlynnnnn]

Answer to Question 1

c

Answer to Question 2

c

[Ebrown]

TYSM

[TheNamesImani]

Gracias!