what was a game - changing development in early food preservation?\ndehydration\nrefrigeration\ncanning

Brief Explanations:

Dehydration has been used for centuries to preserve food by removing moisture which inhibits microbial growth. Refrigeration is a more modern - era development. Canning, while important, became more prominent later in history compared to dehydration. Dehydration was one of the earliest and most impactful methods for long - term food preservation.

Answer:

dehydration