Answer: Python Puzzler #2912

The answer is D. The program prints:

[3, 7, 11, 15]

This answer was checked by running the program for real.

Why?

range(3, 17, 4) counts from 3 in steps of 4 and stops before 17.

The code again

print(list(range(3, 17, 4)))

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