Final answer:
Most film adaptations differ from the original text by portraying the creature as a mindless beast, which creates less sympathy for the creature compared to the novel's more nuanced portrayal.
Step-by-step explanation:
Most film adaptations of Mary Shelley's novel Frankenstein differ from the original text primarily by creating less sympathy for the creature. In particular, option C is correct: They create less sympathy for the creature by making him a mindless beast. Unlike in the novel where the creature is a complex character with feelings and intellect, many film adaptations portray the creature as a simplistic monster without the depth of character or the ability to articulate his suffering and experiences - a significant shift from the novel's portrayal. This change highlights a departure from the intricate layers of narrative found in Shelley's original work, where the creature's point of view provides insight into his struggles and elicits empathy from the reader.