Answer: Python Puzzler #3023

The answer is A. The program prints:

[3, 8, 13, 18]

This answer was checked by running the program for real.

Why?

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

The code again

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

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