Final answer:
One important effect of George Washington Carver's research into many new uses of peanuts was that C) peanut butter became a staple food in most of the South.
Step-by-step explanation:
One important effect of George Washington Carver's research into many new uses of peanuts was that C) peanut butter became a staple food in most of the South.
Carver discovered over 300 different uses for peanuts, including creating peanut butter.
His research helped popularize peanut butter as a nutritious and affordable food option, especially in the Southern United States.
Today, peanut butter is widely consumed and enjoyed not only in the South but across the country.