Final answer:
Infants develop a preference for local food because their mother's amniotic fluid changes taste with different foods eaten during pregnancy. Newborns respond to different tastes and show a preference for sweet tastes.
Step-by-step explanation:
Infants develop a preference for the taste of their local food because the taste of their mother's amniotic fluid changes with different foods eaten during pregnancy. Newborns can respond to different tastes, including sweet, sour, bitter, and salty tastes, and they generally show a preference for sweet tastes. Additionally, newborns show a preference for the smell of foods that their mother ate regularly during pregnancy.