Answer: Python Puzzler #3265

The answer is C. The program prints:

[13, 22, 39, 47]

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 = [39, 22, 13, 47]
scores.sort()
print(scores)

Try it: change one number in the program and predict the new output before you run it.