Answer: Python Puzzler #2910

The answer is D. The program prints:

[6, 8]

This answer was checked by running the program for real.

Why?

range(6, 10, 2) counts from 6 in steps of 2 and stops before 10.

The code again

print(list(range(6, 10, 2)))

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