The answer is D. The program prints:
[6, 14, 21, 40, 45, 49]
This answer was checked by running the program for real.
Why?
sort() puts the list in order, smallest first. It changes the list itself.
The code again
scores = [6, 40, 21, 45, 49, 14]
scores.sort()
print(scores)
Try it: change one number in the program and predict the new output before you run it.