Answer: Python Puzzler #1210

The answer is D. The program prints:

[5, 9, 13, 17]

Checked by running the program for real.

range(5, 20, 4) counts from 5 in steps of 4 and stops before 20.

print(list(range(5, 20, 4)))

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