Answer: Python Puzzler #1109

The answer is C. The program prints:

boop!byte
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 = ["boop", "byte"]
print("!".join(sounds))

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