Because he knew Oedipus was the murderer.
I thinks it’s A cause stock character is in literature and theater or film of a type quickly recognized and accepted by the reader or viewer and requiring no development by the writer
Believe in yourself. Know your rights. Decide what you want, Get the facts. Planning strategy. Gather support. Target efforts. Express yourself clearly. Assert yourself clearly. Be firm and persistent. Here's a list of 10 examples.
Answer: horizontally or vertically