The correct answer is the first one.
He describes Mrs. Miller's behavior as "unprecedented." By this, he is saying that, of all the parents he has ever known, her behavior is unusual, singular, or unique.
Quite simply, it is strange that she would allow her daughter to run around town with a strange man. Mrs. Miller's behavior is more than silly -- it is downright unheard of.
Are less important to the overall plot
Answer:
A is scholarly articles
B is popular articles and
C is books
Explanation:
Scholarly articles are peer reviewed and researched well. Popular articles give you a basic summary and books are written over a longer time due to the length