The pail parts are connected to the cord in a self-operating napkin machine. Hence, the correct answer is pail. Read below about the Self-operating Napkin.
How does a Self-Operating Napkin work?
Extra weight in pail pulls cord which opens and lights automatic cigar lighter, setting off sky-rocket, which causes sickle to cut string and allow pendulum with attached napkin to swing back and forth thereby wiping off your chin.
Therefore, the correct answer is pail as given above.
learn more about Self-Operating Napkin: https://brainly.com/question/21547964
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