The last choice, "Teens who sleep less than 5 hours a night suffer from more immune related illnesses according to a study released in 2015 by the American Journal of Medicine." It gives a source to where the information had been gathered.
It means a word meaning opposite of another word. Example: big and small, tall and short ect..
I think its A because relevance is necessary for academics because you need facts of whatever you are learning
Yes, the answer is definitely A - true. In the oral tradition, obviously, people didn't use written texts, they told their tales from memory. And of course they would add something, or remove something else, or use a different vocabulary from the person who told them that story. It cannot be told in the exact same way the previous person told it, it is impossible.
