Final answer:
A rule not to eat food off the ground is an example of informal learning and establishing norms related to health and safety, akin to cultural food proscriptions seen in many societies.
Step-by-step explanation:
The rule a parent gives to a child not to eat food off the ground is an example of establishing safe and healthy behaviors, which ties into larger societal norms and learning of what is considered appropriate behavior. This form of learning may be informal, much like when children observe and imitate older siblings or if a pet learns to avoid certain behaviors due to repeated scolding. Cultural norms and teachings, like food proscriptions grounded in religion, also guide behavior regarding what people should and should not eat, such as the Hindu principle of vegetarianism based on nonviolence or the Jewish dietary laws of kashrut.