A school crossing sign is an example of a warning sign.
Explanation:
A warning sign is known to be a sign which shows warning about the state of the road which can be dangerous.
A school crossing sign indicate that children use or cross the road to and fro school. This sign is on the road in order to caution or alert drivers to be aware of the school children and to keep them safe.
Both Calpurnia and Atticus are people respectful of the other. Calpurnia is angry at Scout because the girl does not treat Walter as an equal and acts in a rude way. Atticus supports Calpurnia's actions because he is also a moral man who tries to teach his children about respect.
The practitioner must separately date and time his or her signature authenticating an entry, even though there may be a date and time already on the document, because the latter may not reflect when the entry was authenticated:True