Answer: Python Puzzler #3104

The answer is D. The program prints:

ping pong zip beep

This answer was checked by running the program for real.

Why?

join glues the items of a list together, putting ‘ ‘ between each pair.

The code again

sounds = ["ping", "pong", "zip", "beep"]
print(" ".join(sounds))

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