To order the trails from longest to shortest, we need to determine the lengths of each trail clearly. It seems there might be some confusion in the way the mile markers are presented; let’s clarify the lengths first.
- Trail A: 6 815 miles (likely meant to be 6815 miles)
- Trail B: 6 15 miles (possibly 615 miles)
- Trail C: 6 23 miles (possibly 623 miles)
Now let’s compare the lengths:
- Trail A: 6815 miles
- Trail B: 615 miles
- Trail C: 623 miles
Now we can list them from longest to shortest:
- A (6815 miles)
- C (623 miles)
- B (615 miles)
The correct order from longest to shortest is A, C, B. However, that option isn't provided in the responses.
Given the available choices, the longest trail is A, but none of the provided options correctly represent the order from longest to shortest.
Please check if there was a mistake in the lengths provided for Trails B and C, or if the options need to be adjusted accordingly.