Final answer:
To find out how much longer the blue trail is than the orange trail, use the subtraction expression: 4.1 - 3.33.
Step-by-step explanation:
To find out how much longer the blue trail is than the orange trail, you would use the subtraction expression: D) 4.1 - 3.33. This is because 4.1 represents the length of the blue trail and 3.33 represents the length of the orange trail.
Subtracting the length of the orange trail from the length of the blue trail will give you the difference in length between the two trails.