To determine the order of the trails from longest to shortest, let's first clarify the lengths of each trail:
- Trail A: 6,815 miles
- Trail B: 6,15 miles (which seems to be incorrectly formatted; I will assume it is 6.15 miles or similar)
- Trail C: 6,23 miles (which also seems to be incorrectly formatted; I will assume it is 6.23 miles or similar)
Now, if we consider the likely intention behind the formatting, we have:
- Trail A: 6,815 miles
- Trail B: 6.15 miles (6 miles and 0.15 miles)
- Trail C: 6.23 miles (6 miles and 0.23 miles)
Now, we will arrange them from longest to shortest:
- Trail A: 6,815 miles (longest)
- Trail C: 6.23 miles
- Trail B: 6.15 miles (shortest)
Therefore, the correct order from longest to shortest is:
A, C, B
So the answer is A, C, B.