Which of the following is a breach of etiquette?
a. a girl quietly reads a book at the library
b. a man stands in line at a crowded bank
c. a woman talks on her cell phone at the dinner table
d. a teenager greets another teenager and they shake hands

An example of a  breach of etiquette is a woman talking on her cell phone at the dinner table (C). A breach of etiquette is a violation of established social norms or expectations. It is generally not considered polite to talk on your cell phone at the dinner table.

c. A woman talks on her cell phone at the dinner table

Explanation:

A breach of etiquette refers to the acts of an individual that are deemed incorrect or improper from those of the social norms expected from people and in a professional environment.  

Example C mentions a woman that is talking during dinner, this action is a breach of etiquette because it is regarded as disrespectful and impolite when someone prefers to spend time talking on her cell phone instead of communicating with the people that may be around her.

answer: i dont know tbh

explanation: