Answer
Since the distance of Triton from Neptune is less than the maximum distance found in part (a), it is possible for Triton to cause a total solar eclipse on Neptune.
Work Step by Step
According to part (a), 5,438,000 miles is the maximum distance that Triton can be from Neptune and still cause a total eclipse.
It is given in part (b) that Triton is approximately 220,000 miles from Neptune. Since the distance of Triton from Neptune is less than the maximum distance found in part (a), it is possible for Triton to cause a total solar eclipse on Neptune.