The prophecy from the witches state that no woman born from man shall harm Macbeth. We learn in the story that Macduff was ultimately ripped out of his mothers womb (through a c-section) this means that he was technically actually never born
The answer is c "do not understand what the sign says.
An unreliable narrator is someone in which tells the reader a version of a story that cannot be taken true, or reliable.
The effect given off by an unreliable narrator could be incorrect or biased. Unreliable narrators are also keen to persuade readers into believing them.
A. This fellow had...an ignorant silver watch and showy brass watch chain