Answer:
I think that social media should be higher security. So many kids under the age of 13 are on it. There are many predators attacking young children. It is an unsafe environment. Many kids get groomed each day on social media.
Explanation:
Omen is a prediction
an antynoym for omen would be a;
Mystery
Secrecy
Hiding
Concealment
I would say "C" is the best oral thesis out of all the others. It provides a powerful opinion on The Cast of Amontillado.