Answer: Python Puzzler #1056

The answer is D. The program prints:

pong!beep!bit!zip
What the program prints
Checked by running the program for real.

Why?

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

The code again

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

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