Answer: Python Puzzler #3201

The answer is A. The program prints:

[44, 43, 11, 10, 1]

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 = [44, 10, 11, 1, 43]
scores.sort(reverse=True)
print(scores)

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