Answer: Python Puzzler #1069

The answer is B. The program prints:

[13, 20, 25, 31, 36, 37]

Checked by running the program for real.

sort() puts the list in order, smallest first. It changes the list itself.

scores = [25, 20, 13, 31, 37, 36]
scores.sort()
print(scores)

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