Answer: Python Puzzler #3059

The answer is D. The program prints:

[6, 10, 14]

This answer was checked by running the program for real.

Why?

range(6, 15, 4) counts from 6 in steps of 4 and stops before 15.

The code again

print(list(range(6, 15, 4)))

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