Answer: Python Puzzler #2857

The answer is D. The program prints:

[4, 8, 12]

This answer was checked by running the program for real.

Why?

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

The code again

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

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