Well I don't know if I would recommend the blue I would actually would go for the yellow because it is my favorite color so ya she should pick yellow.
I'm pretty sure that the answer is 71, hope it helped!
Answer:
21/2
Step-by-step explanation:
The answer can be determined by substracting the lengrh of the woodland trail from the Marsh trail
- 


converting the fraction to its simplest form gives 21/2