Foraging Remained the Dominant Mode of Subsistence Among Australia's Aboriginal

Foraging remained the dominant mode of subsistence among Australia's Aboriginal people, largely because:

A) Large marsupials continued to propagate and diversify their ranks, especially after 16,000 years ago
B) Raiding parties from other parts of Southeast Asia continuously destroyed the crops the Aboriginals had planted in undefended fields
C) Australia possessed only two types of grain and lacked the rich concentrations of grain found in the Fertile Crescent of Western Asia
D) It permitted a division of labor by gender that satisfied the goals of both the men and the women in the group