Answer: Python Puzzler #1168

The answer is D. The program prints:

[7, 20, 21, 33, 38, 48]
What the program prints
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 = [7, 33, 38, 20, 21, 48]
scores.sort()
print(scores)

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