Answer: Python Puzzler #2855

The answer is A. The program prints:

[9, 12, 31, 32, 37, 42]

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 = [42, 12, 37, 9, 31, 32]
scores.sort()
print(scores)

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