The three witches constituting a supernatural sisterhood appear in the very opening scene of Macbeth on a desert place amidst their incantatory thunder and lightning, striking the key-note of the whole play:' Fair is foul, and foul is fair'. The ' weird sisters ' re-appear in act 1 scene 3 to deliver their proclamations to Macbeth. They also make prophetic messages for Banquo. These agents of darkness and evil cast serious influence on both Macbeth and Banquo.
Among the other options, betrayal and loyalty in battle also deserve to be considered. In act 1 scene 2, we are told how the rebellious Macdonwald is killed in battle by Duncan's most loyal and courageous general, Macbeth. Then Macbeth and Banquo fight together for their king against the Norwegian king, clandestinely supported by the treacherous Thane of Cawdor. But the noble and loyal Macbeth goes on to kill his king and kinsman, Duncan.
the supernatural. this scene begins with witches. they are in an eerie setting(rain,thunder lighting). they are the supernatural(unnatural) forces in the play. if u read further, ud see that Banquo even says the same thing when he questions them "are u from this world(paraphrase). for scene 1. but for the whole act, all the options are correct
the main theme is in act one to provoking the ambition of Macbeth and witches came to him and tells its prophesies also about banqu
I think the main theme of act1 is the use of supernatural elements and the beginning of betrayal of Macbeth to his king(Duncan).