Answer:
c ) Adjust the string line along the walkway and ensure angle 6 measures 63 degrees.
Step-by-step explanation:
The images are missing, so I looked fro similar questions and found the attached image. Since angle 6 is not congruent with angle 2, the lines will not be parallel. Matt needs to adjust the string line along the walkway so that angle 2 measures 63°. That way, both string lines will be parallel.