Answer: Python Puzzler #3367

The answer is B. The program prints:

[6, 10]

This answer was checked by running the program for real.

Why?

range(6, 13, 4) counts from 6 in steps of 4 and stops before 13.

The code again

print(list(range(6, 13, 4)))

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