Final answer:
The sun sets on the heath at the beginning of the play, as indicated by the witches' dialogue where they arrange to meet on the heath before the set of sun.
Step-by-step explanation:
The setting is the time and place in which the story takes place. The period of a story can impact characters, plot, and theme. Wars, natural disasters, and societal changes are examples of how a period of time affects the drama
The sun seems to set on the heath at the beginning of the play in question. This setting is established through the dialogue of the witches in the play, who plan to meet upon the heath after the battle, before sunset. This is verified by the following lines spoken by the witches: Second Witch.
When the hurlyburly's done, When the battle's lost and won. Third Witch. That will be ere the set of sun. First Witch. Where the place? Second Witch. Upon the heath. Third Witch. There to meet with Macbeth. Therefore, the correct answer to the question is (a) The heath.