Final answer:
The part of the plot that involves the introduction of finger spelling and subsequent events is known as the rising action, where tensions and conflicts build up towards the climax of the story.
Step-by-step explanation:
When referring to the introduction of finger spelling and subsequent events in the story as an illustration, this would be classified as the rising action of the plot. The rising action is characterized by a series of events that heighten the tension and develop the conflicts leading up to the climax. It often involves the main characters encountering difficulties, embarking on quests, or unraveling mysteries that engage the reader's attention. Unlike the exposition, which sets up the story by introducing the setting, characters, and potential themes and conflicts, the rising action moves the story forward by complicating the situations and escalating the challenges faced by the characters.