Answer: Python Puzzler #2907

The answer is C. The program prints:

boop...zip...bit...ping

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

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