Final answer:
The screams described signify a mixture of fear, realization, or alarm in characters, often indicating a moment of high emotional intensity or confrontation in the story.
Step-by-step explanation:
The question relates to the interrogation of characters' emotions and reasons behind an intense reaction, specifically why they started screaming in a given situation. Examining textual references, the screams likely stem from fear, revelation, or alarm caused by an immediate threat or a moment of profound realization.
For instance, Mr. and Mrs. Hadley's scream possibly signifies their sudden understanding of a horrifying truth. The chained form's scream from the catacombs suggests overwhelming terror and possibly the anticipation of doom. Kismine's hysteria over the mountain being wired is a fear response to imminent danger.
Venters interpreting eyes dilating and pallor could indicate a dramatic emotional response to shock or fear for safety. Bernice's reconnaissance, leading to confrontation, reflects a mix of righteous indignation and hurt upon discovering Marjorie's deceptive behavior.
The intensity of these screams in literature serves to heighten emotional stakes, push narratives forward, and provide readers with insights into the inner turmoil of characters. Through such expressive moments, authors convey the characters' extreme distress, which often acts as a pivotal point in the story, affecting future events and decisions.