Answer: Python Puzzler #1119

The answer is D. The program prints:

[4, 9, 14, 19]

Checked by running the program for real.

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

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

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