Despite Differences Arising from Environmental Variation, All Foraging Economies Have

Despite differences arising from environmental variation, all foraging economies have shared one essential feature:

A) their willingness to test out new food-producing technologies to see if they are any better than what they are used to.
B) their reliance on welfare supplied by state-level societies.
C) their reliance on available natural resources for their subsistence, rather than controlling the reproduction of plants and animals.
D) their interest in developing irrigation technologies to control sources of water.
E) their emphasis on devising new forms of organic pesticides.