Final answer:
The answer is true, you should place your napkin in your chair when leaving the table temporarily. This social etiquette is taught in Social Studies and signals to staff that you intend to return.
Step-by-step explanation:
If you need to leave the table for any reason but intend to return to finish your meal, it is indeed correct to place your napkin in your chair. This is considered polite etiquette in many cultures and signals to the waitstaff that you are not finished with your meal. However, if you are finished or leaving for good, you should place your napkin neatly on the table to indicate that you have completed your dining experience.
This question relates to etiquette, which is part of social customs and is often taught in Social Studies classes. Understanding and following dining etiquette is important for students as they represent themselves in social gatherings and professional settings in the future.