What were Betty and Abigail doing in the forest when Reverend Parris frightened them?

Betty and Abigail were involved in dancing and conjuring spirits in the forest, which highlights their engagement in ritualistic activities that were considered taboo and deceptive within the context of Puritan society. This act is central to the plot of "The Crucible," as it serves as the foundational moment which ignites the witch hunt hysteria. Their actions not only reflect their rebellion against societal norms but also reveal their desire for power and agency in a restrictive environment.

The fear and panic that ensue when Reverend Parris discovers them underscore the repressive atmosphere of Salem, where any deviation from the established moral code can lead to dire consequences. This moment sets off a chain reaction of events that affect all characters involved, showcasing how fear and superstition can manipulate the truth and lead to devastating results for the community.