Answer: Python Puzzler #3093

The answer is C. The program prints:

[43, 40, 38, 18, 8, 4]

This answer was checked by running the program for real.

Why?

sort() puts the list in order, smallest first. reverse=True flips it, so the biggest comes first. It changes the list itself.

The code again

scores = [43, 8, 40, 18, 38, 4]
scores.sort(reverse=True)
print(scores)

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