Answer: Python Puzzler #2859

The answer is A. The program prints:

[15, 17, 18, 22]

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 = [17, 18, 22, 15]
scores.sort()
print(scores)

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