Answer: Python Puzzler #1208

The answer is D. The program prints:

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

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