Final answer:
Abigail uses emotional appeal in Act I of 'The Crucible' to instill fear in the girls to ensure their silence regarding their activities in the woods.
Step-by-step explanation:
In Act I of The Crucible, when Abigail warns the other girls, she is not using bandwagon, testimonial, or fear to get the girls to join her. Instead, she is using an emotional appeal to instill fear in them to ensure their silence. Her reference to witnessing the murder of her parents and threatening them with a 'pointy reckoning' leverages her traumatic experiences to evoke fear and ensure that they do not speak of 'the other things,' referring to their activities in the woods that could be conceived as witchcraft. This emotional appeal creates a powerful deterrent against betrayal, manipulating the girls through the terror of potential consequences.