An efficient hunting-gathering mode of subsistence among our ancestors involved question 3 options:

a. women providing a majority of the daily calories needed by the family

b. a sexual division of labor

c. women participating alongside men in big-game hunting

d. men providing all the food save

C. Women participating along side men in big-game hunting.

The appropriate answer is b. a sexual division of labor. Women were primarily responsible for foraging and gathering. They gathered fruits, wild berries, nuts etc. The men were primarily responsible for participating in big game hunting. Big game depended on the region in which the peoples were settled but examples included buffalo and bison.