One of the keys to the development of settled communities was

A, The ability to store food year-round in structures that protected wheat, barely and other domesticated grains from insects, moisture and percolating water

B, Finding locations near salt deposits which allowed both for the storage of food and regional trade

C, Finding locations near minerals such as tin and copper which allowed for the development of weapons to protect village inhabitants from roving hunters

D, Isolation which protected inhabitants from plagues