The presence of the witches at the beginning of Act 2 helps contribute to the mood of

Witches contribute to a dark, mysterious and suspenseful mood.

Explanation:

This question is about "Macbeth".

Witches are figures associated with evil, fear and terror. For this reason, their presence in a literary work has the ability to create dark moods, where fear is present and there is a sense of mystery and suspense, where it is expected that something evil is revealed. This is no different in "Macbeth" where the presence of witches in the second act of the play has the ability to transmit this type of mood to the reader and viewer.

the author is showing that it is the insatisfaction of basic needs that brings about the protests such as the strikes.if workers do not earn enough to buy food and feed their families and themselves in order to continue working, what is the use of working? besides, another message from the author is that of the owners of factories should be worried about ensuring their furure by having a second and third generation of workers in their industries.if they do not hear the workers demands, they will not have any more workers to make their pockets full.