To find out how much longer the pink ribbon is than the red ribbon, you need to subtract the length of the red ribbon from the length of the pink ribbon.
Length of pink ribbon: 3.154 inches
Length of red ribbon: 2.715 inches
Now, perform the subtraction:
3.154 inches - 2.715 inches = 0.439 inches
So, the pink ribbon is 0.439 inches longer than the red ribbon. The correct answer is 0.439 inches.