Answer: Python Puzzler #3131

The answer is D. The program prints:

[20, 24, 36, 39, 41, 49]

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 = [49, 36, 24, 41, 20, 39]
scores.sort()
print(scores)

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