The answer is D. The program prints:
[16, 21, 31, 40]
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 = [21, 40, 31, 16]
scores.sort()
print(scores)Try it: change one number in the program and predict the new output before you run it.