Answer: Python Puzzler #2976

The answer is A. The program prints:

[6, 8, 10, 12, 14, 16]

This answer was checked by running the program for real.

Why?

range(6, 18, 2) counts from 6 in steps of 2 and stops before 18.

The code again

print(list(range(6, 18, 2)))

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