Answer: Python Puzzler #1231

The answer is A. The program prints:

[5, 8, 11, 14, 17]

Checked by running the program for real.

range(5, 20, 3) counts from 5 in steps of 3 and stops before 20.

print(list(range(5, 20, 3)))

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