That is a little hard to answer but if a had to say, at is like telling someone where something is and on is like an object is over another object. It is a little hard to explain
It becomes an adverb, because if you think about it, you're adding something to the meaning of the word!
<u>Definition of:
Adverb:</u> A word or phrase modifying an adjective, verb, adverb, or word group!
Using information about a specific observation or to reach a general conclusion.
They risk their lives and themselves in danger so the citizens of the country remain safe
Answer:
Messina
Explanation:
She's the princess of Messina