How did the development of agriculture change the lives of early South American peoples A many groups developed a social hierarchy B more groups moved near the coasts C civilization quickly developed D groups started to settle in one place

The development of agriculture significantly changed the lives of early South American peoples primarily by leading to **D: groups started to settle in one place**.

With the advent of agriculture, communities were able to cultivate crops and domesticate animals, which encouraged sedentary lifestyles instead of nomadic ones. This shift to settled agriculture allowed for the establishment of permanent villages and eventually the development of more complex societies and civilizations. While options A and C are also true to some extent as agriculture can lead to social hierarchies and the formation of civilizations, the fundamental change initiated by agriculture was the movement from nomadic to settled life.