Final answer:
The percentile rank for movies that are 110 minutes long is the 50th percentile.
Step-by-step explanation:
The percentile rank for movies that are 110 minutes long can be found by looking at the box plot. First, locate the median (50th percentile) on the plot. Then, determine if the value of 110 falls below or above the median. If it falls below the median, it would be in the lower 50th percentile. If it falls above the median, it would be in the upper 50th percentile. Since the given options are a) 50th percentile, b) 60th percentile, c) 70th percentile, and d) 80th percentile, the correct answer would be a) 50th percentile.