Answer:
Option: A.They had to move from place to place in search of life.
Explanation:
The ability of hunter-gathers to survive was strongly dependent on their capacity to cope with their environment. Before the coming of cultivation, humans got their food by foraging like berries, roots, plants, and nuts, along with hunting wild game and fishing. Hunting-gathers moved in small groups, and it is uncertain that anyone exercised authority over any group. There were no kings or chiefs in such societies.
