Ducks live near ponds and lakes. The shape of a duck’s foot helps it swim and walk on muddy ground. Which factor is most important in determining the shape of a baby duck’s foot?

A the shape of the parent ducks’ feet
B the temperature of the pond water
C the amount of mud in the bottom of the pond
D the amount of rain that fell before the duck was born



A. the shape of the parents ducks' feet.