Inferred is another word of saying "taken to perspective" or "interpreted as...".
Hidden meanings or messages are meant to be figured out and used to help you in future situations.
So, I would say:
a. True!
Duncan is a king and he has two sons. The sons were <span>Malcolm and Donalbain. </span>The flight of Duncan's sons portray into Macbeth hands is that, he killed the chairman, and that it was done because of anger. This reason made Duncan's son feared him more and more.
